When i edit my blog, the text are gone, with protecting a page.
See that, it's blank, there is currently no text, the page protected
Could you provide a link to the page?
Edit: Based on a newer thread, it seems like this is just an issue with protected pages in general. You should report the bug.
Edit2: Source mode seems to work fine.
That's a bug in my blog
Okay. Have you tried source mode?
Yes. If it repeats, it may disappear!
Well, using ?action=submit seems to be a reliable workaround. Across the other threads regarding this issue, I haven't seen anyone say that doesn't work for them.
What do you think?