Created attachment 130381 [details] the bad image generated in pdf vs original pptx Opened a pptx PowerPoint in LibreOffice containing Chinese characters. Converted it to PDF using LibreOffice. a fade cloud and X image appears in the PDF that didn't exist in the original powerpoint.
Hello Haleh, Thank you for reporting the bug. Please attach a sample document, as this makes it easier for us to verify the bug. I have set the bug's status to 'NEEDINFO'. Please change it back to 'UNCONFIRMED' once the requested document is provided. (Please note that the attachment will be public, remove any sensitive information before attaching it. See https://wiki.documentfoundation.org/QA/FAQ#How_can_I_eliminate_confidential_data_from_a_sample_document.3F for help on how to do so.)
Created attachment 130962 [details] original slide Please find attached the original slide. Thanks.
The "cloud and X" image does exist in the presentation, but it is white, so you don't notice it from the background. You can delete it like so: View - Slide master, click to the right of the Chinese chars to select the "invisible image" and hit your delete key. Then return to View - Normal.