With OpenGL ES 3.0 and 3.1, when the device supportes texture sampling from the vertex shader, we store the shader info data in a RGBAFloat texture. Some devices may not support RGBAFloat, which results in exceptions that prevent UIToolkit from working, as it has been reported here:
https://forum.unity.com/threads/scrollview-scroller-and-foldout-crash-android-build.1033615/

Repro Steps:
-Create a UIDocument with a ScrollView.
-Build for Android
-Run on an Android device that supports texture sampling from the vertex shader but does not support RGBAFloat

Expected Result: Should work perfectly
Actual Result: The ListView is not displayed, logcat reveals exceptions related to the support of RGBAFloat

This issue also affects the editor when using GLES 3.0 or 3.1 without extensions. This is a regression although this mode is not used often.

Alternate repro steps:
-Launch the editor with the options "-force-gles30 -force-clamped" or "-force-gles31 -force-clamped"
-The editor throws exceptions all over the place.