Keyboard access for tabs is known as Tab / Ctrl+Tab to go forward/backward in the list of tabs. However, this does not work for vertical tabs.
(In reply to Heiko Tietze from comment #0) > Keyboard access for tabs is known as Tab / Ctrl+Tab to go forward/backward > in the list of tabs. However, this does not work for vertical tabs. Do you mean Ctrl+Tab and Ctrl+Shift+Tab? That's at least what I'm familiar with to switch between tabs.
TabControl::ImplHandleKeyEvent() seems to handle it for HT, and VerticalTabControl::EventNotify() in case of VT only for KEY_PAGEUP.
Heiko Tietze committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/fedc32852981682df6919147ecf410d7a06964d6 Resolves tdf#169383 - Accept ctrl+tab / shift+ctrl+tab on vertical tabs It will be available in 26.2.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Michael Weghorn committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/de9ada85ae274a77a0b03b7cfa89feac66216464 tdf#167125 tdf#169383 vcl: Handle Ctrl{,+Shift}+Tab within vertical tab page It will be available in 26.2.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.