It seeems that this problem has been reported before: https://ask.libreoffice.org/en/question/122653/why-is-it-opening-pptx- in-draw-instead-of-impress/
So I'd like to file a bug upstream with the pptx in question. They need a file that reproduces the issue. Alex, would you be ok with providing me with the pptx and allowing me to post it to an upstream bug report? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libreoffice in Ubuntu. https://bugs.launchpad.net/bugs/1926261 Title: PPTX is opened in Draw not in Impress Status in libreoffice package in Ubuntu: Confirmed Bug description: After updating to Ubuntu version 21.04 and thus also updating LibreOffice to 7.1, some PPTX presentations are no longer opened with Impress, but with Draw. Unfortunately, I can not upload the presentations, because I would violate the privacy and / or copyright rights. ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: libreoffice (not installed) ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12 Uname: Linux 5.11.0-16-generic x86_64 ApportVersion: 2.20.11-0ubuntu65 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Tue Apr 27 09:27:33 2021 InstallationDate: Installed on 2021-02-09 (76 days ago) InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash SourcePackage: libreoffice UpgradeStatus: Upgraded to hirsute on 2021-04-23 (3 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1926261/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp