Open and save attachment 115291 [details] from bug 91061 back to DOCX, then try opening it in Word. => Word fails to open the file cleanly. Observed using LO 25.8.0.0.alpha0+ (736998ccef0bacdd2bbf038c98dacfbe654f1a4d) / Windows. If one: - unzips the saved DOCX, - executes the following command (can be done in Linux/Cygwin, needs xmllint installed): find . -name "*.xml" -type f -exec xmllint --output '{}' --format '{}' \; - rezips the result with .docx extension ...then Word points to line 204 of /word/document.xml, which is the end of an <a:custGeom> element. The element has lots of shape guides/gluepoints. This is a regression from the following commit in 25.8 (and its 25.2 backport): https://git.libreoffice.org/core/commit/86d36ee56521438069504fbacff8dc2aff3a1afc https://cgit.freedesktop.org/libreoffice/core/commit/?id=86d36ee56521438069504fbacff8dc2aff3a1afc author Tibor Nagy <tibor.nagy.extern@allotropia.de> Sun Feb 23 21:35:17 2025 +0100 committer Nagy Tibor <tibor.nagy.extern@allotropia.de> Mon Feb 24 14:22:14 2025 +0100 "tdf165262 PPTX export: fix shape export regression" Those suspicious gluepoints aren't there when exported from a build preceding the regressing commit. Based on basic research, it looks like "logwidth" isn't an allowed formula element for shape guides, eg.: <a:gd name="GluePoint1Y" fmla="3048002*logwidth/6096000"/> List of test files regressing from the same commit: fdo75230-1.docx fdo83227-3.docx forum-mso-en-11007.docx forum-mso-en-12264.docx forum-mso-en-12822.docx forum-mso-en-16347.docx forum-mso-en-16497.docx forum-mso-en-17960.docx forum-mso-en-3360.docx forum-mso-en-4455.docx forum-mso-en-4463.docx forum-mso-en-4464.docx forum-mso-en4-598647.docx forum-mso-en4-746483.docx forum-mso-en4-771610.docx forum-mso-en-5509.docx forum-mso-en-5558.docx forum-mso-en-6088.docx forum-mso-en-970.docx forum-mso-en-974.docx ooo123731-1.docx tdf91061-1.docx