I found the Staging Platform in Anaxas already destroyed, with no way to continue the mission. Maybe in that case the player should be able to dock with Anton?

This has happened to other players (before 1.8):
https://forums.kronosaur.com/viewtopic.php?f=3&t=8519&p=75195

george moromisato 20 Feb 2019:

See: https://ministry.kronosaur.com/record.hexm?id=84671

Corporate Command version 1.2.18 will have this fix, to be released concurrently with 1.8 final.

Thank you!