TabControl tabs disappear when pressing tab key a certain amount of times

Sorry in advance for the overuse of the word tab I’m about to incur in, but I can’t avoid it since the problem is that I’m creating an App using a TabControl component to clasify my input fields into two groups using two tabs, which is all good but when testing it, if I press the tab key to switch between input fields, buttons and tabs, it comes to a point where both tabs disappear and I can only see and access the fields present in the tab I’m on. My firtst guess is that is not in fact disappearing but rather moving when focused by the tab key, and in that movement the tabs seem to “hide” behing the top navbar. If that’s the case, I’d like to know how to avoid it, if not, what the problem is and how to solve it. Thx

Edit: I’ve removed the top navbar and indeed, what’s happening is the control moves up when I press the tab key