Walkthroughs for custom maps.

Here's what RoseKavalier wrote to me:

Strange, I loaded my final save from a while ago to look... it behaves as my screenshot.

Tried New game... doesn't work like yours.

It seems I had unintentionally stumbled on something that triggers re-calculation of tiles where you can land. If only I could figure out what -_-

In other words, when he reloads, he also can't land on the shore. This means that during the Walkthrough, he unintentionally did something that directly affected the ability to disembark. All that remains is to find this clue.

The dragon can be transferred to LiLaLauneBer in the hero exchange window in the HD version; I tried having him board the boat, but it doesn't help. Gabriel 2 killed a hero in the neighboring Necropolis, but it's impossible for this same hero to reach the tent due to insufficient movement points. The screenshot was taken at a later stage of the Walkthrough. LiLaLauneBer is probably standing in the tent, and it was likely not Meister, but some third hero who boarded the boat (later in the scenario, a hero with a boosted admiral's hat gains a town portal). It is not possible to replicate this situation with these two heroes due to a lack of movement points.

Added 5 minutes later
I created a test map today and checked the moment of disembarking on a cell where there was a prison. It is impossible to land on the active cell (the one highlighted in yellow in the editor) after the hero is released.