Map doesn't have a locator when in the left hand

[Duck986]

With Backpacked:

Without Backpacked:

[MrCrayfish]

I've having no issue. Maybe you have other mods causing the issue. Try with only Backpacked installed, no other mods.

[Duck986]

Removed everything (even Optifine) except Backpacked, but nothing changed:

Here are the logs, if this helps:

debug.log latest.log