With the GNOME 2.26 mutter, one-dimensional window maximize no longer
works correctly.  Specifically, if you set one of the "titlebar actions"
in gnome-tweak-tool's "windows" tab to either "toggle maximize vertically"
or "toggle maximize horizontally", then triggering the action will
cause the window to be fully maximized instead of maximized in only the
desired direction.

I waited to file this bug until both the 2.26 gnome-shell and the
2.26 gnome-tweak-tool appeared in unstable, but the behavior has been
consistently wrong since 2.26 mutter appeared in unstable, so I'm
pretty sure it's mutter's fault.

reassign 878943 gnome-terminal
quit

mutter version 3.26.2 seems to have corrected the problem for *most*
graphical programs -- but not for gnome-terminal.  I am therefore
reassigning this bug to gnome-terminal.

Same issue for me for several months.

Dear Maintainer,

I also confirm this annoying bug.
I run gnome-flashback and metacity.
Other windows work as expected with "toggle maximize vertically" and
"toggle maximize horizontally", but gnome-terminal does not.
Now I have experienced it with gnome 3.38 (and gnome-tweak-tool 3.34) since
upgrading to bullseye (but perhaps I did also with buster, just found some
workaround 2 years ago, which was broken by the upgrade).

I guess the original bug report meant version 3.26, not 2.26, everywhere,
including the bug title.

Also, in gnome-tweak-tool the relevant tab is now "Window titlebars", not
"Windows".

Andras