c59d998ce5
The operator system assumes that the `ot->ui` callback means there will always be a redo panel. This situation where there is a callback but sometimes no inputs hasn't been encountered before. Resolve that by changing `WM_operator_check_ui_empty` into a `WM_operator_ui_poll` that handles this case properly, with a new operator type callback called `ui_poll`. See #101778, #111346 Pull Request: https://projects.blender.org/blender/blender/pulls/112251
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