yes it is a problem, and possibly a serious safety issue.
the insulation on some transformers is probably deteriorating, and causing the AC line voltage to leak onto the chassis.
or some other path, like a failed capacitor from the line voltage to ground, has failed as a low impedance.
back in the day, some audio amplifiers had a capacitor from one of the input AC lines to the chassis to reduce hum, and if the hum was bad, you threw the switch to the other side, and it connected the capacitor to the other line.
clearly both of these chassis do not have an earth ground connection. OR your earth ground connection is not good. or you live in a country that does not use earth ground connections! here in the USA all 115 v AC lines have a third prong for earth grounding.