unhide hidden objects MD4 screen

i'm using the "visible" slot alot in my display pages on MD4 to conditionally hide and show values/controls alot. 

When hiding a value channel, on startup, and then unhide it when for example i press a VDIN the value will not unhide until i press the button the second time. 

in the simulator everything works as expected. the value gets visable the first time i press the VDIN, but on the acctual hardware i need to press it twice.. 

Anyone seen this before? is it a calculation order thing? when do the screen refresh? can i force a "redraw" of the screen? 

and the odd thing is that it is only true for the absolute first time after boot, later on all works in the current display page..

IQAN 5.00, MD4-10

Robin