Created attachment 163997 [details] Screenshot displaying bug. with language tool extension -- close writer window and restart application from within LO --> double toolbar. Also happens when toggling print view. Writer must be restarted.
Thank you for reporting the bug. To be certain the reported issue is not related to corruption in the user profile, could you please reset your Libreoffice profile (https://wiki.documentfoundation.org/UserProfile) and re-test? I have set the bug's status to 'NEEDINFO'. Please change it back to 'UNCONFIRMED' if the issue is still present.
Rule of thumb is search before reporting and confirming. I guess you didn't search, looks like duplicate. *** This bug has been marked as a duplicate of bug 128491 ***