Incorrect work with xmonad

Submitted by Alexander

Assigned to Florian Rivoal

Link to original bug (#13923)

Description

Floating window with calendar (appears after LMB click at datetime plugin) stretched to the whole screen (tiled) in tile window managers. It works correctly before. Clock plugin, which has same ability, works nice (floating windows with normal size). P. S. Look at color bug with mpc plugin published by me, datetime plugin is also affected (and several others too), but I'm not sure if I should create this bug here.