Stuck shift key on Delete field text macro

[Boris II]

I've created a macro so that users can press Shift-Del and clear out the contents the field they are currently in. It is pretty straighforward stuff:

Code:

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key H SE X

My problem is that, every once in awhile (I haven't been able to track down the cause), after this macro is run, the shift key stays stuck as if it were being pressed. From then on, the Delete key acts like a backspace key. All of my function keys stop working properly because F9 thinks that Shift-F9 is being sent and vice-versa. As soon as I disable the QM triggers, everything returns to normal. When I enable them again, things continue OK until the next time this error creeps up. Does anyone have any ideas as to what might cause this or how to trap/prevent it?
Thanks

[Gintaras]

Try to check 'use low level keyboard hook' in Options -> Triggers.

Or check 'when released' in Properties.

Or this:

Code:

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key H SE X
key- S