SQL Dev Version 24.3.0.284
I've not seen anything here regarding this infinite scrolling process bar. This issue does not affect anything, but it's distracting at the least.
Right clicking it only shows “Show Processes” as an option and clicking it does nothing. “Show Output” and “Cancel Process" are both greyed out.
It doesn't stop unless I exit and restart SQL Devleoper. Then shortly later it will begin again after executing anything (simple query, etc).