Description Pierre-Yves Bigourdan 2020-08-01 06:03:46 EDT

Some UI elements aren't rendered properly when first displayed. This is easier to notice when using any dark theme.

Steps to reproduce:
* download a fresh copy of the "Eclipse IDE for Java Developers" package.
* launch it, switch to the dark theme, restart.
* open the search dialogue (Ctrl+H). "File Search" should be opened as the default.
* switch to the "Java Search" tab. Notice the white horizontal sections.
* go back to "File Search".
* switch to "Java Search" again. The white sections will have disappeared.

Will upload two screenshots in follow up messages. Note that I've been able to reproduce this behaviour on both macOS and Windows machines.

Other way of reproducing:
* use an a workspace containing a custom theme (for example the Platform UI codebase).
* add the following CSS to the theme:
Label {
  visibility: hidden;
}
* launch as an Eclipse application.
* open the Error Log view. Notice that all labels are visible.
* click anywhere in the Error Log view. Only then will the labels disappear.