This happened because the viewport was drawn after
the UV editor when some update occur (e.g. canceling an
operator). The requested UV edit batch would require only
one specific UV channel. The viewport, in need of a different
UV channel, requested a VBO rebuild (freing the old UV VBO)
but did not correctly clear the UV batches that were referencing
the said VBO. This lead to use after free which would sometime
works because the same memory would be reused for a random new
batch.
Pull Request: https://projects.blender.org/blender/blender/pulls/136780
9181485931