[RESOLVED] VB6 behaviour - form.frx / user control(s)

[adix]

i have made a custom usercontrol - which contains other standard vb6 controls.
Suddenly i have detected that on special forms the "create new" or "delete" control (during designmode [place new control from the toolbox]) cause errors.
Other controls (of the same type) on the form got grey.
(kind of invalid .. similar if you change the code of the usercontrol in the background while a form with such a control is visible)

On a fresh form i could not reproduce this.
The affected form(s) are fitted with a ".frx" file and a couple of properties are stored in the frx file. (checked with a texteditor)
Multiline captions, other binary data is okay .. but in this case nearly all "font" properties are redirected as well.

This problem occures only in the IDE during the create or delete event of other controls.
(btw: the usercontrol terminate event of the other controls is not fired when this happens)

i have debugged now a while .. but i have still no clue how to fix this.
(i could reopen the form after each create/delete action .. but i want to avoid this)

Therefore the question to the round.
Did anyone had a similar problem - what was the workaround / solution?

OS: Win7 x64
VB6 Version: 6.0.9782

Thank you