Timur's steps from bug 119530:
"Open DOC attachment 52631 [details] from Bug 42112 or .DOCX attachment 144474 [details] from Bug 119529.
Double click diagram to open embedded document.
Could be open and edited with 6.1, but opens read-only in 6.2+ so we cannot edit it.
Not sure if regression or on purpose because editing is wrong.
Note: if one has MSO, depending on settings, double click can open MSO but it should open LO, as can be seen where there's no MSO."
This was first caused as a side-effect of the following commit:
author Aron Budea <firstname.lastname@example.org> 2017-08-02 03:34:24 +0200
committer Jan Holesovsky <email@example.com> 2018-07-13 18:25:27 +0200
tdf#110987: type detection, binary Office formats > templates
Got fixed by this revert:
author Aron Budea <firstname.lastname@example.org> 2018-09-08 14:27:41 +0200
committer Aron Budea <email@example.com> 2018-09-08 20:11:10 +0200
Revert "tdf#110987: type detection, binary Office formats > templates"
And reintrocued by the following:
author Tor Lillqvist <firstname.lastname@example.org> 2019-02-19 11:03:20 +0200
committer Tor Lillqvist <email@example.com> 2019-02-19 18:02:30 +0100
tdf#110987: Don't mis-detect .doc files as .dot