In Impress, possibly with slides either imported from earlier versions or from PowerPoint, font background style are set to a plain color with the attribute fo:background-color="#ffffff".
In order to set the background to the default one, one has to save the file as fodp, remove the attribute using vi/sed/perl, and re-open the file in LO Impress.
Would it be possible to add a way to modify this attribute within the ui, both in direct character format setings, or style character format settings ?
Could you attach an example document, so we can quickly confirm?
Set to NEEDINFO.
Change back to UNCONFIRMED after you have provided the document.
the erroneous white background color was caused the very serious bug 88295.
there is actually UI to modify the background color but only in 5.0, see:
because this is new UI with new translation strings it cannot be backported to 4.4.
i've just found out that it also works to round-trip an affected ODP file through LO 4.3, apparently that version didn't support the background color at all yet so it makes everything transparent again.
so i think this is a duplicate of bug 88276
seems i should have resolved this DUPLICATE
*** This bug has been marked as a duplicate of bug 88276 ***