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!
