Spring Tool Suite 4.7.1 editor bugs after update

Question

I recently updated to version 4.7.1 of Spring Tool Suite on my Ubuntu 16 and since then two strange bugs have appeared in my editor. I wonder if it is STS/Eclipse bugs or if my cat has changed some setting to cause this (yes, she likes lying on the warm laptop keyboard, logging in as admin, opening stuff and changing settings. Don't ask me how...)

1. When placing marker anywhere and then click-dragging anywhere (to mark a word or a few lines) the entire visible page get's marked from the top to where I had marked.

2. I can no longer ctrl+click a Java class to go into it's class file as I used to. I also can no longer hover a marked error to get suggestions for solutions like I used to. No hover at all is present.

• I have tried searching the editor settings and resetting to default.
• I have tried uninstalling STS and installing again, and SAME issues!
• I have tried multiple online keyboard checkers and they don't mark any keys as being "held down constantly" or stuck.
• I tried installing Eclipse (not STS) and the same issue appears there.
• No issues in Gedit or Visual Code.
• I tried connecting external mouse and keyboard, same problem as using native laptop mousepad or keyboard.

Is anyone else having this problems with Eclipse or STS?

Answer 1

1. Selection issue: On Linux make sure to use the right GTK version, which is for the current Eclipse 2020-06 (4.16) GTK 3.20 or higher
2. Hover issue: As you have found out yourself, make sure to run Eclipse with the right Java VM (which can be specified in the eclipse.ini file)