Issue found while investigating bug 79007 Steps to reproduce: 1. Open attachment 154658 [details] from bug 79007 2. Save it as .PPTX 3. Open it again -> Observed behaviour: Grayscale, back/white and watermark color modes are gone Reproduced in Version: 6.4.0.0.alpha0+ Build ID: 49a634425f0d433541f8309f2575c8bdfd67afbe CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3; Locale: en-US (ca_ES.UTF-8); UI-Language: en-US Calc: threaded The DOCX part was implemented in https://cgit.freedesktop.org/libreoffice/core/commit/?id=0db96caf0fcce09b87621c11b584a6d81cc7df86 and https://cgit.freedesktop.org/libreoffice/core/commit/?id=d151ed35ad4c4e7aa9fbb807930fcf91dea2eba7 see bug 87539
*** Bug 125409 has been marked as a duplicate of this bug. ***
Xisco Fauli committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/cb5eaa791739865d54b381c16c60224c432171dc tdf#127901: pptx export image greyscale, watermark, black/white It will be available in 6.4.0. 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.
Xisco Fauli committed a patch related to this issue. It has been pushed to "libreoffice-6-3": https://git.libreoffice.org/core/commit/ff2f0e839f7b7ef5e79b8ec4311c971c0e8053f9 tdf#127901: pptx export image greyscale, watermark, black/white It will be available in 6.3.4. 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.
*** Bug 129351 has been marked as a duplicate of this bug. ***
My submission was marked dup of this one, I can confirm fixed in 6.3.4.2