Start with a document, the user was a newbie he know in general Ctrl+F will call the search bar and he did. After the search, he think the panel use too much space on screen and cannot find a visible close button(in graphical aspect) so he dragged the panel up and find it and click. Then crash. I tried this out. And also found if run with "--sync" then crash won't happen. The program 'soffice' received an X Window System error. This probably reflects a bug in the program. The error was 'BadMatch (invalid parameter attributes)'. (Details: serial 7984 error_code 8 request_code 42 minor_code 0) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)
I don't reproduce this on 4.1.3 Debian package. I put it as WFM. Jiero: don't hesitate to reopen this tracker if you can still reproduce this.