In this particular case, I launched a rocket miner, but he did not return for a long time. I found it discharged; after changing its crystal, it did not fly away. He dug to the -64 height (the last block was bedrock) and placed a pipe block there, which broke the last layer of the world and hung over the abyss, endlessly trying to dig something up.

Mod version: IC2Classic-1.19.2-2.0.7.1

I had such a situation, I wrote a post before yours, so far there is no answer

Sorry. I simply forgot to answer.
It will be addressed in the next patch

So you've read my post? Do you think this is a miner's bug or did I make a mistake somewhere?