If you have a TabPane with multiple tabs and the last tab is disabled, the Ctrl+Page Up/Page Down navigation does not work correctly anymore.

Ctrl+Page Up will jump to the previous tab until it reaches the first, then it will wrap around and select the last (disabled) tab, which shouldn't happen. From there it will proceed to select only not-disabled tabs until it reaches the first again.

Ctrl+Page Down will jump to the next tab until it reaches the last not-disabled tab, from there it will do nothing (no wrap around).