Version information:

• Platform: Windows 10
• Version: 25.11
• Build/commit: 20f5eab

Describe the bug
Whenever I try to build a dock in this specific custom scenario, the game crashes.

To Reproduce
Steps to reproduce the behaviour:

1. Open included scenario (it contains a few custom objects, but they should be exported with it)
2. Click "build dock" button
3. Game crash

Scenario:
Icicle Island.zip

Crash report:

0acf2159-7755-4b12-aa0a-eb6610e3e1ba(OpenLoco, v25.11 (20f5eabb on master)).dmp