Fixed scrollbar issue, source size when explicit was read before applying custom size constraints (followup to cc2c0238808eb626bf613e1a920bd9b9e5f83299 etc.)
Fixed scrollbar issue, source size when explicit was read before applying custom size constraints (followup to cc2c0238808eb626bf613e1a920bd9b9e5f83299 etc.)

mikesart/gpuvis,mikesart/gpuvis,mikesart/gpuvis