At first I changed this translation, but for some reason it didn't update the target page.

The next day I tried to fix another translation by replacing the paragraph with a single word - "Захист" (the original text said "Protection"), but my edit didn't show in the edit history of that translation unit. Somehow it did save my translation (see here), but the last diff shows a change to a completely different text content (see here). That diff says that it has been reverted to the last version by... but the last version had only one word - "Захист". I have no idea where that chunk of text comes from, and why it does display that way in that page history.

Also, whenever I try to translate that message again, it either doesn't do anything, or does something like this to the target page (I made several attempts): 1, 2. Every time it says "Replaced content with "Захист"", but as you can see from the diffs, there's no such word in the changes made. (Instead, this edit was intended.)

Please see my latest contributions for a reference. Try to reproduce this by doing this:

1. Go here
2. Find the units saying "Protection" or "Welcome!" in the source text
3. Replace the existing translation with "Захист" or "Ласкаво просимо!", accordingly
4. Open the page history of the translation unit (for "Protection" and for "Welcome!") or just refresh the page you're on.
5. Repeat from step 1.