I have seen scrollbars because I have opened panel on the black panel, and it is very short time.
So maybe there is a posibility to set another dark color for scrollbars

<t>Hello,<br/> I open the panel using command ChildPanelOnCentralModal("objects_parampanels/BlocadePanel.pnl", "BlocadePanel", makeDynString("$dpName:" + $dpName));<br/> <br/> At the initialize scripts on panel I set size of the panel setPanelSize(myModuleName(), "BlocadePanel", false, PanelSize[1],...