This merge request should fix #253 (closed), #245 (closed) and make !56 (closed), !57 (merged) unnecessary. It sets the default window size to 1100 x -1 (-1 means unset). I chose this size, because even with close, minimize and maximize titlebar buttons on the left side the sidebar is still visible. Like this:
But with the current version on master, the sidebar is not visible and causes flickering:
Tested on 14" 1600x900 display. Someone should test it on different resolutions and sizes.