Fedora rawhide was updated to glew 1.9.0 two days ago, and megaglest rebuilt.
I also did rebuild it locally and ensured I had everything up to date in my rawhide
computer, and the problem persisted.
The game is unplayable because mouse clicks are incorrect, usually right clicking
anywhere is interpreted as right click to close to the "town center". Double click
to select multiple units, or drag a rectangle to select multiple units also ends up
selecting wrong units, and cannot unselect after that.
The problem only manifests after game start, that is, menus work, and only
change I am aware is glew update. But it may be a side effect of something
else, so I am also attaching valgrind log of a few seconds in game.