Thunderbird restore on change resolution

[szczemp]

Thunderbird window restores from tray when I change resolution. My default resolution is 1920 x 1080. When i change from 1920 x 1080 to lower (eg. to 1440 x 900) window is in tray, so it is OK. But when I change from lower resolution to default (eg from 1440 x 900 to 1920 x 1080) window restores from tray and I need to minimize it manualy. And when change from lower to higher (not default, eg 1440 x 900 to 1600 x 900) window is in tray, so it is OK.
And when I change monitor from laptop screen to TV thunderbird restores, and when fron TV to laptop screen thunderbird restorez to.