Using Arduino IDE 1.8.14 Hourly Build 2021年03月09日 09:33 with Windows 10 64 bit

• In the IDE editor type foo()
• Hold the Enter key until the above text scrolls off the screen.
• Edit > Find > Find: > foo > Find
• The screen scrolls up to foo, after a second a tooltip appears:
  clipboard09
  Apparently Find is causing a malfunction of a new feature added to show a tooltip of off-screen opening parts of the match for the bracket where the cursor is at. It might be an upstream bug in RSyntaxTextArea.

This occurs in all IDE versions from Arduino IDE 1.8.2 on
This does not occur with Arduino IDE 1.8.1

An additional problem I noticed caused by this bug is the Arduino IDE steals focus from the Find window when the unnecessary tooltip appears.