Created attachment 185346 [details] form40b42RT4.docx: minimal example where two column breaks are lost The problem is that when opening the file in LO, the two column breaks are lost. (Likely they are eaten up by the textboxes.) The file originated as a DOC, but when saving it to DOCX, it was noticed that the columns were lost. They are retained when round-tripping as a DOC (although deleting a few more paragraph marks can break that as well). Note that the DOCX opens fine in Word 2010, so it is an import problem, not an export problem. Steps to reproduce. -open the provided DOCX file. -notice that there is no content in the second and third column. There should be one paragraph of text in each column on the first page.
This looked OK in 6.3, but broke with commit 14087d3e5fed9b56384432d9aeac608a5e8d86cf Author: Justin Luth on Fri Dec 21 21:22:51 2018 +0300 tdf#121670 ooxmlimport: no columns in page styles, only sections https://gerrit.libreoffice.org/65557 I'm not sure it really is a regression, but I'll mark it as such anyway.
Justin Luth committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/80f9ad23282e0d8c4ba3441797d4899b9555eee3 tdf#153592 writerfilter: don't defer breaks into shapes/comments It will be available in 7.6.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.