Created attachment 120680 [details]
Steps to reproduce.
1) create a new presentation
2) set slide to "title, content" page
3) add a few lines of content
4) resize content box so that font size gets automatically reduced
5) save as pptx (Office Open XML or Powerpoint version)
6) close LO and reopen the save ppt file
7) font size has increased back to normal size
This is with LO 188.8.131.52 on Fedora 22 linux.
I have not tested opening the file in MS Office, only saving and reopening on LO.
Created attachment 120681 [details]
Exported pptx file
Same happens in 184.108.40.206
Reproducible with LO 220.127.116.11, Win 8.1
Still a problem in 18.104.22.168 (on Linux x86-64)
And: original text is Liberation Sans 32, it stays like that in Format-Character, while it changes in Sidebar-Properties when resized.
After RT, font is Arial 32 in both locations.
Looks like all the way from LO 3.3.
I suspect this may be the same as in 1-slide PPTX attachment 128239 [details] that's supposed to look like PDF attachment 128240 [details] from Bug 103488 (I extracted that from attachment 114355 [details] from Bug 90237).
There, font Calibri Light (Headings) 19 from MSO after roundtrip becomes in LO: Calibri Light 24 in Format-Character and Calibri Light 16,7 in Sidebar-Properties.
Still an issue in 22.214.171.124
Much improved in current master. It looks like the Autofit is correctly saved and loaded now. However the font still changes from Liberation Sans to Arial, and there is a small change in font size.
Build ID: a283847a95dd8935dec687d91709604d96636a34
CPU threads: 4; OS: Linux 4.14; UI render: default; VCL: gtk3;
Locale: en-GB (en_GB.utf8); Calc: group threaded
The changing of fonts is intentional for interoperability, a system with MS Office likely won't have Liberation fonts installed.
(In reply to Aron Budea from comment #8)
> The changing of fonts is intentional for interoperability, a system with MS
> Office likely won't have Liberation fonts installed.
I can't find it documented. While I may understand reasoning, I'd say such a change on-the-fly is wrong without noticing a user. And I see that in Impress only, not in Writer. Please write a source if you know, documentation or bug or fix.
In that case shouldn't LO be embedding the font? (https://support.office.com/en-us/article/Embed-fonts-in-Word-PowerPoint-or-Excel-cb3982aa-ea76-4323-b008-86670f222dbc suggests that pptx format supports this).
Sam, question is a good one. Guess that it deserves a new bug if it doesn't.
Still we must have this font change documented.