Root cause for this issue seems to be the "new" cursor. The blue tag which indicates the cursor's position isn't rotated. The same applies for the pop-up window where you can select "cut, paste, etc.". It is still visualized in portrait view. I managed to get a screenshot just before the crash (see attachement).
** Attachment added: "Screenshot of app just before crash." https://bugs.launchpad.net/ubuntu/+source/messaging-app/+bug/1465942/+attachment/4421484/+files/cursur.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1465942 Title: Selecting written text in landscape mode causes app to crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/messaging-app/+bug/1465942/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs