Hello, as the Navigator(Alt+4) shows name of objects in Impress, an object should have an unique name. However, a .pptx gives lots of same name as ‘Image 0’‘Shape 1’ etc. The error may be that, in one slide the name is unique but for entire presentation it isn’t.
Currently I believe it can only occur when an external .pptx opens, however I can’t provide sample. Feel free to submit a bug report.
Version: 24.2.6.2 (X86_64) / LibreOffice Community
Build ID: ef66aa7e36a1bb8e65bfbc63aba53045a14d0871
CPU threads: 8; OS: Windows 10.0 Build 22631; UI render: Skia/Raster; VCL: win
Locale: en-CA (en_CA); UI: en-GB
Calc: threaded