Make Grease pencil mirror Real time

Hey, I found this thread looking for the same solution. I figured out a workaround for tracking your changes in real time, although sadly it will be forced to be a "shadow" created through an effect, but it works well for what you're trying to achieve.

Add the shadow effect, set the offset X and Y to 0px, then set scale X to -1.
This will flip the shadow over the x axis and it will appear in real time as your draw. Then also add the mirror modifier, and disable the shadow when done.

thanks for the replies, I think the 3d drawing experience becomes more intuitive when it updates real-time,im not tech savvy enough to give technical solutions on how to make it work under the hood...i can provide real-life examples where this becomes useful

Modifier works as modifier: it reduces calculations. But for mirror there can be an exception

Alchemy al.chemy.org/