With GTK+ 3 and certain, even default, themes, the notebook tabs are so massive as to not allow more than one tab visible at a time in certain notebooks like the sidebar and message window. This just sets the `enable-popup` property of those notebooks to true to give an alternative way to quickly change the current tab.
Related somewhat to #1718 and #1723. You can view, comment on, or merge this pull request online at:
https://github.com/geany/geany/pull/1726
-- Commit Summary --
* Enable popup menu on sidebar and message window notebooks
-- File Changes --
M data/geany.glade (4)
-- Patch Links --
https://github.com/geany/geany/pull/1726.patch https://github.com/geany/geany/pull/1726.diff