[1.12.2] Miner gets stuck on Lava Pools even tho it has a pump next to it

[Ramog]

Modpack: tekkit smp
Minecraft Version: 1.12.2
IC2 version: IC2Classic-1.12.2-1.5.11.jar

people on the Technic discord and me included have issues with getting the Miner (using Mining Laser and OD Scanner & Pump) work correctly (or maybe we have a misunderstanding on how its supposed to work?)
we are on tekkit smp, the pumps and miners are set up correctly have cells and mining pipes and plenty of energy

basically the issue is that:

1. it hits the lava pool
2. pumps the first block
3. goes down
4. pumps the 4 blocks directly adjacent
5. gets stuck
   this seems very problematic for mining but IDK maybe we are doing something wrong?

first video is what happens when you first try it (don't mind Gold Ore thats just a delay so I can get into spectator before it hits the lava)
second video is what happens after a reset (retracting mining pipes and starting again)
See here on Speigers Disord.

Apperently block updates are causing this issue, causing lava to flow
There are hints that the same updating issue might also exist with water. Althought I haven't tested that to confirm or deny, just some past stuff with the same version I am recalling.