I am not "converting" or using a "plotting script".
Only the basic functionality of a brand new Zorro installation.

As you can see in the screenshot above from the ZHistoryEditor, this is not what it's supposed to look like (happens with other assets too btw).

This is the script, no funny business

Code
function run() 
{
	setf(PlotMode,PL_ALL+PL_FINE);
	resf(BarMode, BR_WEEKEND);
	BarPeriod = 10;
	StartDate = 20220607;
	GapDays = 1;
	Verbose = 3;
	vars Prices = series(priceC());
	plot("MarketVol",marketVol(),BARS|NEW,BLUE);
	set(PLOTNOW);
}

Attached Files strange-data.PNG