bug#71714: 29.3; Emacs behaves as if it is not maximized

[Po Lu]

Patrick Nicodemus <gadget142@gmail.com> writes:

> OS, Emacs version : I am on Ubuntu 24.04 using the GUI version of
> Emacs in the emacs-gtk package, 29.3. The bug is also reproducible for
> me on Emacs 30.50 on this computer. The bug may be a problem with the
> GNOME desktop environment or window manager rather than Emacs, but I
> cannot reproduce it with any other Ubuntu applications other than
> Emacs. Intel® Core™ i7-6700T × 8
>
> Behavior: When Emacs is maximized, there is an invisible rectangle
> whose top side and left side agree with the top and left side of my
> monitor, whose bottom is about 70% of the distance from top of the
> screen to bottom, and whose right side is about 45% of the distance
> from the left edge of the screen to the right, and the response to a
> mouse click is identical to the behavior if Emacs were un-maximized,
> i.e., was a floating window living in the top left corner of the
> screen of that size and shape. A mouse click outside the invisible
> window causes Emacs to be minimized, and the next window comes to the
> front (Or, if the desktop is the only thing behind emacs, Emacs is not
> minimized, and the click has no effect). Clicking inside the rectangle
> has the expected effect. In addition to Emacs being minimized, if the
> click is outside the invisible window, the mouse click does not have
> the expected effect on the Emacs buffer (the cursor does not move).
> Other than this, Emacs fully behaves as expected, i.e. text wraps at
> the far right of the screen, not the invisible right edge of the
> window for mouse input. The behavior persists after disabling
> "Enhanced Tiling" in the Ubuntu settings and restarting the
> computer. The behavior persists when using the -Q flag.
>
> I cannot reproduce the problem on a laptop which has the same
> operating system and Emacs version so this may be difficult to
> reproduce.  I will supply additional information to help reproduce if
> requested.

Might you perhaps require enabling `frame-resize-pixelwise'?