There is some strange behavior with tooltips. Maybe because of 21:9 screen (position relative to left side of screen instead of right).
Nodes tooltipes on passive tree:
Tooltip seem to move of the same distance as the one between hovered nodes.
Connections tooltips on passive tree:
Same line, three different connections. Two tooltips on the same position. One on a different position.
Tooltips on Skill selection page are OK.
Tooltips on Skill tree pages are not.