I should mention that this is really a band-aid. The text object instances don't know about the particle system anymore. So particle specific information will be lost in the shader for those instances. At least that makes the instances show up in 3.0. Not sure if that's worth it. No idea how likely it is that this breaks other things.. As long as the instanced object doesn't didn't contain even more instances in 2.93 (which wouldn't be rendered anyway), it's probably safe.