If the question arises in the context of rating evaluation, to my humble opinion it is as simple as:

- are you rating the device? If so, H8-bug blunders leading to lost games must be taken in the calculation. A Saitek Chess Challenger deserves a slightly lower CElo rating than a GK2100, because it will statistically lose some extra games due to the bug.

- are you rating the chess engine, focusing on the author's 32K program? Is so, you should use a bug-free device or, if unavailable to you, neutralize the H8-bug occurrences; whether replaying the game or using the workaround.

During a competition, that's another story. The tournament rules should apply. Long time ago, mainframe computers chess tournaments granted a decent but limited time for recovering from a computer or program crash, or communication failure, to restore the position and restart thinking... just because it was frequent.
MfG,
Tibono