Slight displacement in mouse position triggers timer reset (pass=1).
With such condition, new redraw call to tooltip sets non zero timer
value (`r_pass_delay`) and `is_label=true` inside `ui_but_tooltip_init`.
This label boolean further skips drawing of description (for example, see:
`ui_tooltip_data_from_tool`).
To resolve this situation, inside timer_reset function keep `pass=0`
when tooltip region exists (i.e label is already visible on tooltip)
Pull Request: https://projects.blender.org/blender/blender/pulls/133258
4450799673