Created attachment 42796 [details]
The "Open..." button needs more room for localization.
The localized string such as Chinese (traditional) use more room than exectation, so the localized string is overlaped by the balck triangle.
See the attachment for more information.
We later use shorter translation (2 full-width characters instead of 4) to bypass the issue.
But I still think it should have more space for translation.
sophie for you?
If there are no other translators bothered with this issue, we can close it.
I will ask in l10n mailing list to get some inputs.
Created attachment 49719 [details]
Open button in Chinese (S) UI
It is a bug even for two-character translation. (as attached.)
The width is determined by the texts on the buttons above (e.g. using English UI, the button is nearly 20px wider), and didn't take its own text into consideration.
I'll take a look.
Fixed by Tomcsik Bence in master (3.6) and 3.5