Created attachment 174992 [details] sample-document.pptx I have a PPTX that has been saved from PowerPoint 2010. It should come with two master slides as described in the screenshot attached. On libreoffice 7.2 it doesn't provide any master slide.
Created attachment 174993 [details] Master slide selection in PowerPoint 2010
confirm in Version: 7.3.0.0.alpha0+ (x64) / LibreOffice Community Build ID: 8151f3a1d99ab740d2affdccc7115faa156bf3ad CPU threads: 4; OS: Windows 6.1 Service Pack 1 Build 7601; UI render: Skia/Raster; VCL: win Locale: ru-RU (ru_RU); UI: ru-RU Calc: threaded
Created attachment 175018 [details] The example file in PP 2019 and Impress master These are not master slides, but custom layouts, which are not used on any slides. Creating custom layouts is not supported in Impress (UI-wise), so it's not surprising these are not imported.
*** Bug 155512 has been marked as a duplicate of this bug. ***
With patches from bug 155512 this is improved so let us call this one resolved. Attached sample here shows all 12 master slide pages. What is not resolved is the order that is different from MSO. Also, there is no parent-child relationship. It all may be bug 62332. With very complex sample like that from bug 155512, not all master slides may be imported. But that may be discussed there.
Opening of MSO saved PPT is different than PPTX as it keeps master slide order, but looses masyer slide content. Another issue that needs a separate ticket: saving of PPTX is NOK, it opens more master slides in MSO.