I check an item "done" and it comes back when I reload the tab

I’v started using GTDNEXT couple of days ago. For some reason I cannot mark a task checked in the “Focus” Window.
If I do, it will disappear from the list just fine but when I reload the tab again, it’s back there.
If I do it from the “Projects & Actions” window then it is fine.

I am using Firefox on Linux:
Build identifier: Mozilla/5.0 (X11; Linux i686; rv:33.0) Gecko/20100101 Firefox/33.0

Okay, thanks for the report. Firefox on Linux - we will check into it. Thanks!

Update: We have repro’ed this issue and are working on a fix.

This has been fixed in build xx.19 - Thanks again for the report!