Are there still any issues with the games due to ScummVM problems? I've noticed some past posts adressing them (and a review saying that the scripting for robbing a store and getting shot in LSL1 is broken) but there's been quite a few updates of the engine since then and I was wondering if many issues persised.

ScummVM is updated all the time. There are even daily builds to use while waiting for the next update to the main program.

Which version of LSL1 is this? I recently (past month) played the original and the store shoplifting death scene worked fine. I haven't replayed the VGA remake yet though.

It we're talking about this bug report, it's the EGA version:

https://bugs.scummvm.org/ticket/13137

The last comment explains how to reproduce it. I was able to do so in ScummVM 2.8.0, and with DOSBox. It's supposed to be fixed in ScummVM 2.8.1, and I was not able to reproduce it there.

GOG uses ScummVM 2.0.0 from, from late 2017.