winforms - Projectitem unavailable when trying to save a form that contains a StatusStrip -

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i added empty status strip in empty form , when try save error pops 1 time:

the thrown error

on next attempt can save until change statusstrip. when start application or re-open designer show statusstrip, none of added buttons in statusstrip. however, produced designer code still contains code of buttons.

does experienced bug or there way further information solve it?

restarting visual studio solved temporary issue @ me.


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