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.

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.

I just wanted to point out that Estranged2 is wrong in his review.
According to the bug ticket from eriktorbjorn's link, the game itself is bugged.

If you get out of the hooker's room through the stairs instead out of the window, you won't get shot if you shoplift.

I've tried to replicate the bug on ScummVM 2.0 (the one shipped with the game on GOG), the current newest version (2.9) and on DOSBOX Staging 0.81.

On ScummVM 2.0, the bug happens if you leave the hooker room through the stairs.
On DOSBOX, the bug also happens if you leave the hooker room through the stairs.

On ScummVM 2.9, the bug no longer happens because sluicebox created a workaround the bug in question https://github.com/scummvm/scummvm/commit/ee5a70598e7143643bc8d686787825b2f8845be4
]https://github.com/scummvm/scummvm/commit/ee5a70598e7143643bc8d686787825b2f8845be4
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Again, it's not a ScummVM bug, it's a bug in the game itself.

In case anyone wants a walkthrough to test the bug: http://allowe.com/images/Larry/WalkThrus/LSL1%20Walkthru%20CGA.pdf

Also, don't forget to type "fast" or "fastest" to change the game speed. Normal is just too slow.