Day three of the powered hub powering this keyboard and there's no problem yet. (Reference of the problem
here and thread about its power issues
here, I'm consolidating the threads about it in the current thread).
That means this keyboard most likely behaves better, at least here or on laptops, with an external power source (by just using a hub, since its own doesn't have a power input). Some preliminary math had indicated that it may draw more than 2A in some cases, which violates the USB standard for non-chargers. Some laptops aren't even designed to give more than 500mA or 500mA x 2 or 3 devices max.
I still reserve full judgement for the power issue but I'm now relatively confident it at least improved significantly.
So yeah, to summarize,
if this keyboard is acting up make sure some soldering isn't needed and that it gets sufficient power.
edit:
PS. I've updated the OP with those findings.