Comment 4 for bug 2037426

I can confirm Linda's finding about the Czech screen described in comment #2. It appears for a fraction of a second, then it disappears. Finally, it is replaced by the English splash screen. So the Czech translation of default items of the splash screen are applied somewhere somehow, although it is not displayed correctly.  I have spotted the same behavior on our test server with EG 3.11 (however, having splash screen items visible at least in English is a little step ahead).

Ability to translate customized splash screen items to Czech would be desirable, however, I can confirm, that the "Apply translations" button is still grayed and is not usable (both, on our EG 3.11 test server, and on the https://bugsquash3.mobiusconsortium.org/ server).