This is a current issue in M3, and will be exacerbated as additional menus may be added to the window toolbar. In very small windows (e.g. multi-up comparison) we currently collapse the title until it disappears, then start clipping icons from the right. The functionality from those clipped icons is not available to the user unless the window is expanded, which they may not know/want to do.

Examples below show the addition of one menu, but the problem exists without that addition.

2-up window on laptop: All buttons visible, title slightly truncated.

Smaller: title nearly disappears

Smallest (in mosaic mode): title gone; close and fullscreen buttons are clipped.

Possible approach

• Maintain a balance between the title and buttons.
• Always retain the close button and the dot button.
• As the window shrinks, collapse the remaining buttons into the dot menu, starting from the right.

Needs more analysis, and there might be better solutions. Need to design how the dot menu would work as a 2-step menu. Recording for future work.