When exiting formula mode from Writer, application will crash.
From Up-to-date Debian Testing install.
Build ID: 1:6.0.1-1
CPU threads: 4; OS: Linux 4.14; UI render: default; VCL: gtk3;
Locale: en-CA (en_CA.UTF-8); Calc: group
Thanks for reporting the issue.
It has been already reported and fixed in bug 115430.
Closing as RESOLVED DUPLICATED
*** This bug has been marked as a duplicate of bug 115430 ***