Forum Discussion
Tabs switch when umber pressed even without having ALT pressed
For what it's worth, with the help of scca's response above...
Repeatable cause: ALT+Tab away from a Fabric Notebook - return to Notebook, numerics now change Notebook tab.
Fix: Just tap ALT in your Fabric Notebook tab, numerics no longer change tab.
I'm guessing other ALT combo shortcuts might also cause the behaviour, but ALT+Tab has proven 100% repeatable for me and a colleague.
Edit: Actually, I'd suggest ALT+Shift to "fix" the issue after ALT+Tabbing. Pressing ALT alone will move focus away from your code block and require a click to get back, ALT+Shift is a valid Fabric Notebook keyboard shortcut that does nothing unless you also cursor/mouse-click - so tapping ALT+Shift will "fix" the numeric behaviour and not change focus away from the editor.