wow thats a really bad news, probably the dimple isn't holding the stem at all. You have to be very careful with that. Even small pull with sleeve may cause some unexpected loss.
Lol, is dimple a technical term? I think you mean the "Corrector Lever". At some point in the future I'll service it and take a good look at the keyless works. On a visual inspection the button to press the corrector lever to release the stem isn't flush with the top of the barrel bridge, and is recessed by 0.5mm. Perhaps that's how it's supposed to be, I can't be sure. Bit of an unknown really.