Hey Devs,
Blocking bug lp:850992 [1] is proving impossible to get a handle on for different devs who are not familiar with the blend code base and it's resisting attempts to let us learn about it.
We could do with a heavy-hitting genius who hopefully knows something about the blend modes for layers to figure this out. I'm betting it's a single line fix when the little worm is rooted out.
To reproduce: Make a new layer with a blend mode other than normal. Group any objects together.
Grouping fails to refresh, ungrouping works as expected. The area isn't being cleared by the redraw method like the text bug (I checked), the redraw is simply failing to happen at all. Tracing the update events is what's causing some headaches since both upstream and downstream tracing just seems to vanish.
Thanks for your help.
Best Regards, Martin Owens