HI Filipe, since you said the bug is general to all tree UIs so we can only guess it is the bug of the Java runtime you are using. But unfortunately, we have tried to test with the exact JRE version as yours and still unable to repeat the problem.
However, we notice that the JRE version of your VP is older than the one our latest build bundles. Could you try download the latest VP and reinstall it to see if the newer JRE has solved this issue? Thank you.