Every long inserter is lost after picking them up, including the original long inserter.

For me they just revert to the normal version, meaning for example Long bulk inserter when placed and picking it up it reverts to Bulk inserter.

Yes, the default setting is for long inserter variants to cost no other resources to craft (aside from the base inserter), while returning the base inserter when mined back up. You can change this behavior in the mod settings

Making it not default may help avoid unnecessary bug reports from people that can't read like OP.

Aren't.. aren't you the OP? But yeah, maybe.. it is a bit more of a personal preference

Yes.

Added new setting in v5.0.3, and modified default behavior for long inserters to drop long inserter when mined. When disabled, reverts to the previous behavior of dropping the base form inserter instead

Thanks!