Mouse pointer at left edge sometimes cannot click on menu

[d01010101]

There are some intermittent problems when clicking on the "LM" menu when the mouse cursor is at the leftmost column. Sometimes it works, sometimes it doesn't.

Move the pointer to any row above the bottom one. Then move the mouse horizontally to the left, even if it is already at the leftmost column, without changing the row. The general feeling it that the button is somehow "buggy" and so sometimes needs to be clicked twice.

Happens both on my desktop/mouse (MATE version 1.26.0-1, Linux Mint 21.1) and on my old laptop/pad (Linux Mint 21.2).

[balazs-endresz]

Some more details here: https://ubuntu-mate.community/t/some-pixels-dont-capture-click-and-hover-events-at-the-edge-of-the-screen/26251 But I've simply ended up moving the menu to the right corner.