When using the "Simple" layout with Big Mining Drills and Medium Power Poles, with direction of facing to the right/east, the power poles won't be properly connected all together between different rows of miners. I had to manually add some poles to power all the rows of miners. I dunno if that's expected behaviour or if they should all be connected?

Thanks for the mod, I love it for making a tedious part of the game a breeze.

No, there's no special logic to connect them between rows. Yes, it's a bit annoying to then add missing poles for connectivity.
I don't really want to do a bodge fix because everything is overdue for a complete rewrite after Space Age.
I'm doing some fixes to account for power pole reach with quality so for example rare medium electric power poles can reach between lanes.

I love this mod, and I just want to say I'm also looking forward for a fix for this.

The same happens in sparse layout, predictably. Maybe "mining row planner" might be a more apt name for the mod :)

In my pain I ported the Outpost Planner to 2.0 (https://mods.factorio.com/mod/OutpostPlanner2)

Unfortunately, it comes with a bunch of it's own issues and lacking features.