The UDIM tile grid behaves oddly/inconsistently in many circumstances for both configuration and display. This design tasks will hopefully a) enumerate the most egregious issues b) provide a place for artist feedback on the proposals c) document the ultimate decision for each item below.
Complete
[X] The UV tile grid no longer disappears as soon as an image is loaded into the UV editor space (rB4fb72170436)
In Progress
[] D11862: Provide a way to disable the grid entirely and respond to the Overlay toggles. Move current UI into Overlay panel as well.
Future design / discussion required
[] Should the tile grid only have manual/static dimensions or should it automatically adjust if the user moves a UV point outside the current dimensions of the grid?
[] Should the tile grid also be shown in the Paint/Mask/Viewer modes in addition to UV edit?
[] Should anything different be done about the grid when displaying non-square images?
Feedback thread: https://devtalk.blender.org/t/the-udim-tile-grid-design-and-feedback-thread/20136
This task will be used for general organization. Most feedback should be provided on the DevTalk thread above.