Bug Description

I found a very weirdly specific glitch happening on the HUD, at first it appeared when combining ModernFix with other seemingly random mods, but after 3 hours I've narrowed to using an affected resource pack, using the mod Sound controller (likely others also affected) and having mixin.perf.faster_texture_stitching set to true (by default), what happens is some small pixels showing on the HUD next to the horse jump bar ONLY when filling the whole jump bar (when jumping, obviously)

Either setting mixin.perf.faster_texture_stitching to false, removing the mod Sound controller, or disabling the resource pack fixes the issue, note that the game must be restarted after this or the issue will remain even after disabling the resource pack as seen here using only the default resource pack, loading the resource pack in a new game will make the issue reappear:

Reproduction Steps

1. Download the mods ModernFix AND Sound Controller
2. Download Dark smooth GUI resource pack
3. While in game, enable the above resource pack
4. Enter a world, mount a saddled horse, and fill the jump bar completely, some small artifacting pixels will appear next to the filled jump bar

Log File

latest.log

This is a vanilla bug (MC-269295); you've just found another combo of resource packs/mods that triggers it (ModernFix's stitching likely arranges the textures differently). Marking this as a feature request.