FTS sequence fetcher help button says "..." in linux

The help button to the right of the text box in the Sequence Fetcher free text search panel (e.g. UniProt) says "..." in linux instead of "?".

If you make the button much bigger then the "?" appears, though it seems unnecessarily larger for a single character.

The button could be styled as a circular help button btn.setClientProperty("JButton.buttonType", "help"); to appear more like other such help buttons. This may help with the "?".