I've been searching for a while for this one, it seems it hasn't been reported yet.

I'm running a NVidia surround triple screen setup, 5760*1080.

When pressing the left alt key, world tooltips only appears on the left most monitor (1920*1080).

After reverting to a windowed, 1920*1080 resolution setup, all is working fine.

Let me know if you need more info.

Cheers!