Click on a font colour toolbar or sidebar button. Taken from top down, the very 1st button in a colour picker pop-up that appears (labelled "Automatic") sets the font colour to a default one (black usually) Now click on a new text background colour toolbar or sidebar button. There are two issues 0. (minor) The default colour button is not labelled ("Automatic" string is missing) 1. (major) When clicked, it sets text background colour to black. Not useful at all, since text is usually black too. It should set it to transparent instead (it works that way in Writer)
This is very much confirmed
Katarina Behrens committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=42f4a65103a1a6d281ea201392aae97213421ff4 tdf#91840: Default to transparent text background It will be available in 5.1.0. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Katarina Behrens committed a patch related to this issue. It has been pushed to "libreoffice-5-0": http://cgit.freedesktop.org/libreoffice/core/commit/?id=339429879b0fe9a0de83167840391b09933fcc7d&h=libreoffice-5-0 tdf#91840: Default to transparent text background It will be available in 5.0.0.0.beta2. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Previously pushed to master. Pushed to 50 and checked on local machine with libreoffice-5-0 build. Bug reproduced before patch. Bug disappeared after patch.