[Bug] Some parts of legacy 2D panels not rendering correctly

[hotdamndel]

First, an odd blank white image which appears rarely with some trains. Train is 10-300 series from https://1drv.ms/u/s!AhCaPh_sbBw9fpYdBQthA4_S39w

In some panels, big images just don't render at all (try 415 series from Rock_on's BVE5 JNR pack for example) or when # is missing in Color in a Needle indicator in Panel2.cfg (as per BVE5 standard), arrows become blue.