fuzzy tool select not working

[rich2005]

The selection is made, it is the 'crawling-ants' display that is broken with bigsur

There is a very long bug report here: https://gitlab.gnome.org/GNOME/gimp/-/issues/5952 quoting from that

Quote:The issue can be summed up as "Selection-outlines (a.k.a. marching-ants) are not being drawn in GIMP on MacOS 11".
Specifically:

This applies to all selection tools (area, fuzzy, etc) and modes (add, remove).

Toggling "Show selection" does not address this issue

We know a selection is happening because:

if you click on the "quick mask" button it will correctly mask any non-selected regions
copy'n'paste-as-new-image correctly copies the selected region of the source image.


but the actual mechanism/trick used to draw the selection-outline marching-ants for it no longer works on MacOS 11, and it is this mechanism/trick we need to replace.

Easiest thing to try is make your fuzzy selection, then toggle 'quick-mask and see what is there.
or open the selection editor dock `Windows -> Dockable Dialogs -> Selection Editor which should show the selection.