diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 2ca1d9c451..fd4123b71b 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -2778,9 +2778,7 @@ scale {
@each $state, $state_infix in ('', ''),
(':hover', '-hover'),
(':active', '-active'),
- (':disabled', '-insensitive'),
- (':backdrop', '-backdrop'),
- (':backdrop:disabled', '-backdrop-insensitive') {
+ (':disabled', '-insensitive') {
&.#{$dir_class}.#{$marks_class} {
> trough > slider {
diff --git a/gtk/theme/Adwaita/assets.svg b/gtk/theme/Adwaita/assets.svg
index b73dc6091b..a0b995fefc 100644
--- a/gtk/theme/Adwaita/assets.svg
+++ b/gtk/theme/Adwaita/assets.svg
@@ -1,6 +1,4 @@
-
-
diff --git a/gtk/theme/Adwaita/assets.txt b/gtk/theme/Adwaita/assets.txt
index 4b27b15e1b..a380d1cce5 100644
--- a/gtk/theme/Adwaita/assets.txt
+++ b/gtk/theme/Adwaita/assets.txt
@@ -14,47 +14,31 @@ slider-horz-scale-has-marks-below
slider-horz-scale-has-marks-below-hover
slider-horz-scale-has-marks-below-active
slider-horz-scale-has-marks-below-insensitive
-slider-horz-scale-has-marks-below-backdrop
-slider-horz-scale-has-marks-below-backdrop-insensitive
slider-vert-scale-has-marks-below
slider-vert-scale-has-marks-below-hover
slider-vert-scale-has-marks-below-active
slider-vert-scale-has-marks-below-insensitive
-slider-vert-scale-has-marks-below-backdrop
-slider-vert-scale-has-marks-below-backdrop-insensitive
slider-horz-scale-has-marks-above
slider-horz-scale-has-marks-above-hover
slider-horz-scale-has-marks-above-active
slider-horz-scale-has-marks-above-insensitive
-slider-horz-scale-has-marks-above-backdrop
-slider-horz-scale-has-marks-above-backdrop-insensitive
slider-vert-scale-has-marks-above
slider-vert-scale-has-marks-above-hover
slider-vert-scale-has-marks-above-active
slider-vert-scale-has-marks-above-insensitive
-slider-vert-scale-has-marks-above-backdrop
-slider-vert-scale-has-marks-above-backdrop-insensitive
slider-horz-scale-has-marks-below-dark
slider-horz-scale-has-marks-below-hover-dark
slider-horz-scale-has-marks-below-active-dark
slider-horz-scale-has-marks-below-insensitive-dark
-slider-horz-scale-has-marks-below-backdrop-dark
-slider-horz-scale-has-marks-below-backdrop-insensitive-dark
slider-vert-scale-has-marks-below-dark
slider-vert-scale-has-marks-below-hover-dark
slider-vert-scale-has-marks-below-active-dark
slider-vert-scale-has-marks-below-insensitive-dark
-slider-vert-scale-has-marks-below-backdrop-dark
-slider-vert-scale-has-marks-below-backdrop-insensitive-dark
slider-horz-scale-has-marks-above-dark
slider-horz-scale-has-marks-above-hover-dark
slider-horz-scale-has-marks-above-active-dark
slider-horz-scale-has-marks-above-insensitive-dark
-slider-horz-scale-has-marks-above-backdrop-dark
-slider-horz-scale-has-marks-above-backdrop-insensitive-dark
slider-vert-scale-has-marks-above-dark
slider-vert-scale-has-marks-above-hover-dark
slider-vert-scale-has-marks-above-active-dark
slider-vert-scale-has-marks-above-insensitive-dark
-slider-vert-scale-has-marks-above-backdrop-dark
-slider-vert-scale-has-marks-above-backdrop-insensitive-dark
diff --git a/gtk/theme/Adwaita/assets/slider-horz-scale-has-marks-above-active-dark.png b/gtk/theme/Adwaita/assets/slider-horz-scale-has-marks-above-active-dark.png
index 146dc10acf..6340b2e2d5 100644
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deleted file mode 100644
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diff --git a/gtk/theme/Adwaita/assets/text-select-start-hover-dark.png b/gtk/theme/Adwaita/assets/text-select-start-hover-dark.png
index cfd5b0d1ae..cf4b9c150a 100644
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diff --git a/gtk/theme/Adwaita/assets/text-select-start-hover@2.png b/gtk/theme/Adwaita/assets/text-select-start-hover@2.png
index 2146dd7698..6ba8f51e22 100644
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diff --git a/gtk/theme/Adwaita/assets/text-select-start.png b/gtk/theme/Adwaita/assets/text-select-start.png
index dd3119fe09..91274257ae 100644
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diff --git a/gtk/theme/Adwaita/assets/text-select-start@2.png b/gtk/theme/Adwaita/assets/text-select-start@2.png
index 45dc598bdc..b9b0aa10e9 100644
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diff --git a/gtk/theme/HighContrast/assets.svg b/gtk/theme/HighContrast/assets.svg
index e432764588..fba15312ab 100644
--- a/gtk/theme/HighContrast/assets.svg
+++ b/gtk/theme/HighContrast/assets.svg
@@ -1,6 +1,4 @@
-
-
diff --git a/gtk/theme/HighContrast/assets.txt b/gtk/theme/HighContrast/assets.txt
index 4b27b15e1b..a380d1cce5 100644
--- a/gtk/theme/HighContrast/assets.txt
+++ b/gtk/theme/HighContrast/assets.txt
@@ -14,47 +14,31 @@ slider-horz-scale-has-marks-below
slider-horz-scale-has-marks-below-hover
slider-horz-scale-has-marks-below-active
slider-horz-scale-has-marks-below-insensitive
-slider-horz-scale-has-marks-below-backdrop
-slider-horz-scale-has-marks-below-backdrop-insensitive
slider-vert-scale-has-marks-below
slider-vert-scale-has-marks-below-hover
slider-vert-scale-has-marks-below-active
slider-vert-scale-has-marks-below-insensitive
-slider-vert-scale-has-marks-below-backdrop
-slider-vert-scale-has-marks-below-backdrop-insensitive
slider-horz-scale-has-marks-above
slider-horz-scale-has-marks-above-hover
slider-horz-scale-has-marks-above-active
slider-horz-scale-has-marks-above-insensitive
-slider-horz-scale-has-marks-above-backdrop
-slider-horz-scale-has-marks-above-backdrop-insensitive
slider-vert-scale-has-marks-above
slider-vert-scale-has-marks-above-hover
slider-vert-scale-has-marks-above-active
slider-vert-scale-has-marks-above-insensitive
-slider-vert-scale-has-marks-above-backdrop
-slider-vert-scale-has-marks-above-backdrop-insensitive
slider-horz-scale-has-marks-below-dark
slider-horz-scale-has-marks-below-hover-dark
slider-horz-scale-has-marks-below-active-dark
slider-horz-scale-has-marks-below-insensitive-dark
-slider-horz-scale-has-marks-below-backdrop-dark
-slider-horz-scale-has-marks-below-backdrop-insensitive-dark
slider-vert-scale-has-marks-below-dark
slider-vert-scale-has-marks-below-hover-dark
slider-vert-scale-has-marks-below-active-dark
slider-vert-scale-has-marks-below-insensitive-dark
-slider-vert-scale-has-marks-below-backdrop-dark
-slider-vert-scale-has-marks-below-backdrop-insensitive-dark
slider-horz-scale-has-marks-above-dark
slider-horz-scale-has-marks-above-hover-dark
slider-horz-scale-has-marks-above-active-dark
slider-horz-scale-has-marks-above-insensitive-dark
-slider-horz-scale-has-marks-above-backdrop-dark
-slider-horz-scale-has-marks-above-backdrop-insensitive-dark
slider-vert-scale-has-marks-above-dark
slider-vert-scale-has-marks-above-hover-dark
slider-vert-scale-has-marks-above-active-dark
slider-vert-scale-has-marks-above-insensitive-dark
-slider-vert-scale-has-marks-above-backdrop-dark
-slider-vert-scale-has-marks-above-backdrop-insensitive-dark
diff --git a/gtk/theme/HighContrast/assets/slider-horz-scale-has-marks-above-active-dark.png b/gtk/theme/HighContrast/assets/slider-horz-scale-has-marks-above-active-dark.png
index 8c8bac8ddf..c9709fe6d0 100644
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diff --git a/gtk/theme/HighContrast/assets/text-select-start-dark.png b/gtk/theme/HighContrast/assets/text-select-start-dark.png
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diff --git a/gtk/theme/HighContrast/assets/text-select-start-hover.png b/gtk/theme/HighContrast/assets/text-select-start-hover.png
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diff --git a/gtk/theme/HighContrast/assets/text-select-start-hover@2.png b/gtk/theme/HighContrast/assets/text-select-start-hover@2.png
index 63a987d4bd..e08b2f82d8 100644
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diff --git a/gtk/theme/HighContrast/assets/text-select-start.png b/gtk/theme/HighContrast/assets/text-select-start.png
index 754ddc8f31..e43b2d7214 100644
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diff --git a/gtk/theme/HighContrast/assets/text-select-start@2.png b/gtk/theme/HighContrast/assets/text-select-start@2.png
index 27cb4e6e22..fe2c257c6c 100644
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diff --git a/gtk/theme/HighContrast/render-assets.sh b/gtk/theme/HighContrast/render-assets.sh
index 7fd8d98d6b..24d7675afe 100755
--- a/gtk/theme/HighContrast/render-assets.sh
+++ b/gtk/theme/HighContrast/render-assets.sh
@@ -1,6 +1,6 @@
#! /bin/bash
-INKSCAPE="flatpak run org.inkscape.Inkscape"
+INKSCAPE="/usr/bin/inkscape"
OPTIPNG="/usr/bin/optipng"
SRC_FILE="assets.svg"