Follow Tools > Customize... menu and add the button "Cycle Case" to a toolbar. It looks even worse in localized versions. Current title/name is "Cycle Case (Title Case, UPPERCASE, lowercase)", and I suggest to remove the part in the braces, and add a description for the item.
Created attachment 139606 [details] Cycle Case button added to the Standard toolbar
Looking at the entry for ".uno:ChangeCaseRotateCase" in GenericCommands.xcu shouldn't the Context Label have the "(Title Case, UPPERCASE, lowercase)" annotation, but the label omit it? Also, for when used as a toolbar button, rather than menu item, seems it could use an Icon. =-ref-= https://opengrok.libreoffice.org/xref/core/officecfg/registry/data/org/openoffice/Office/UI/GenericCommands.xcu#2639
(In reply to V Stuart Foote from comment #2) > Looking at the entry for ".uno:ChangeCaseRotateCase" in GenericCommands.xcu > shouldn't the Context Label have the "(Title Case, UPPERCASE, lowercase)" > annotation, but the label omit it? This label is suitable for the tooltip, so 'Label' should likely be changed to 'TooltipLabel' and 'ContextLabel' changed to 'Label'.
heiko tietze committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=7f8936e7db018664d6074caa9bd6a82972cb4923 tdf#115470 - Name of the "Cycle Case" is too long It will be available in 6.1.0. 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.