With which window manager does this work correctly? Did you try awesome, twm?

[Original comment by anonymous]

Hmm, I just tried twm, it seems behave the same, window's size got increased. I removed all other DEs from my system a few days ago, could not try others, but I suspect it would be the same case.

[Original comment by zhu.qunying@…]

Also in horizontal split mode, gvim's windows has a larger than normal bottom border (gvim's own border, not wm's decoration, anyway has border none set in i3). ":tabnew" will give a even larger border at the bottom.

After moving the gvim window into vertical split position and back, the border is back to normal.

[Original comment by zhu.qunying@…]

Further test on XFCE.

1. If gvim window is not full screen, and has enough vertical space to expand.
   1.1 if gvim is at the bottom of screen, its window height will increase at the top side.
   1.2 if gvim is at the center or top, its window height will increase at the bottom.
2. if gvim window is full screen, then it will act as normal. The tab bar will occupy some editing
   area.

On i3, if gvim is on full screen, it has the problem describe in comment3, it has abnormal high border at the bottom.

Can you try it with another tiling wm, such as awesome? I suspect gvim just doesn’t play nice with tiling WMs.

[Original comment by zhu.qunying@…]

No, gvim is not playing nice with tiling manager. Just tried xmonad, same problem. Maybe an gvim bug should be raised.

[Original comment by zhu.qunying@…]

It seems gvim has similar problem in gnome under Ubuntu also. https://bugs.launchpad.net/ubuntu/+source/vim/+bug/137854

[Original comment by zhu.qunying@…]

Seems wmii solve it. http://code.google.com/p/wmii/issues/detail?id=7

I can’t really tell how wmii fixes it from looking at these commits. Apparently they seem to focus the window after receiving a WM_NORMAL_HINTS update.

[Original comment by TonyC]

This issue is still present in version 4.6

Bumping and updating info.

I cannot reproduce this anymore, so given the age and inactivity I'm closing this now. If anyone can reproduce it still, let us know.