When I go to Project → Breakpoint → Ignore All is ticked, and I cannot change it.
Does anyone have a fix for this?
I found the way to fix this. go to Project → Breakpoint → Ignore All, then use shift+option+command+backslash (as indicated) on OSX to toggle this on and off.
…also, stand on one foot and rub your tummy. 
I works fine for me on macOS. Did you try restarting the IDE?
See my comment above - I figured it out. Thanks for the suggestion, but that would not have reset it.
Hm, also don’t need this workaround, menu works on macos Sequoia 15.7.2 as expected. May a Tahoe thing?