If you are in the textbox where you type/define your quicktexts and the option "Enable fast shortcuts" is checked, the shortcuts to the quicktexts are still active...

This means that while you are in there you can press ALT+1, ALT+2, etc.. The Quicktext for that shortcut will appear and overwrite what you currently have in that quicktext. Worse, if you've got a quicktext with a parameter and you press the assigned shortcut for it, the "Parameter Detected"-dialog will come up.

This could be a choice to do all this in this way, but IMHO it's rather a confussing thing in that case (especially with the parameter thing)...

If I could make a suggestion, it would be to disable the shortcuts (even if "Enable fast shortcuts" is checked) as long as the quicktext-textbox has the focus.

just a thought inspired by that other thread