Comment 54 for bug 785518

David Tardon committed a patch related to this issue.
It has been pushed to "libreoffice-4-0":

http://cgit.freedesktop.org/libreoffice/core/commit/?id=3432c63c0cdcdfe3e74702c16ce6c746d9c0fdf4&h=libreoffice-4-0

fdo#34548 don't crash on undoing text frame removal

It will be available in LibreOffice 4.0.1.

The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
http://wiki.documentfoundation.org/Testing_Daily_Builds
Affected users are encouraged to test the fix and report feedback.