#[SPZ2-5391] Train Previews are broken for wagons that come after spacers

12 messages · Page 1 of 1 (latest)

vast tusk Jun 1, 2026, 12:11 AM

I know broken train previews are a known issue, but I narrowed down this bug to a very specific scenario in my playthrough so I figured I'd share it so the team is aware, and also so that players can avoid this edge case.

-# I looked and couldn't find a discussion about station spacers

Red Train: Just Wagon (Works as Expected)
Blue Train: Wagon, Spacer (Works as Expected)
Green Train: Spacer, Wagon (Broken Preview)
White Train: Wagon, Spacer, Wagon (1 Preview works, 1 Preview is Broken)

Also affects Fluid Wagons

safe trenchBOT Jun 1, 2026, 12:11 AM

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1. [SPZ2-5391] — 🔥 95% similar

Filler wagons block train predictions from shape/liquid wagons attached afterwards.
To Do • Priority: High • Fix: Post 1.0

Spacer Wagons block Shape Previews from appearing on Shape Wagon Unloaders and Fluid Wagon Unloaders that are positioned after the Spacer Wagon in a train configuration. To reproduce, place a train setup where a Spacer Wagon precedes Shape or Fluid Wagons; the unloaders after the Spacer Wagon will not display Shape Previews. The expected behavior is that Shape Previews should work correctly for all wagons regardless of Spacer Wagon placement. The issue is reproducible in the current beta and ...
💬 Threads: [1.0.0-A3-RC1] Spacer Wagon prevents pre

2. [SPZ2-5987] — 👀 72% similar

Train predictions are ending up where they shouldn't when another train is using spacers.
To Do • Priority: Low • Fix: Post 1.0 • Game: 1.0.0-beta2

Shape Previews for one train are incorrectly appearing at positions influenced by another train's Spacer Wagons. When two trains share a route or station setup and one uses Spacer Wagons, the Shape Previews for the other train display in wrong locations, showing extra predictions that should not exist. For example, a train with one Shape Wagon may show three Shape Previews instead of one. The expected behavior is that Spacer Wagons on one train should have no effect on Shape Previews for a di...
💬 Threads: [1.0.0-beta2] Preview for train station

3. [SPZ2-5940] — 👀 35% similar

Wait Stations cause train predictions to travel down areas that trains will never end up
Done • Priority: High • Fix: 1.1 Release [1.1.0] • Game: 1.0.0-alpha5-rc2 • Resolution: Fix Verified

Wait Stops cause Shape Previews to appear on rail paths that trains will never actually travel. In a setup with multiple colored train routes, a Wait Stop assigned to one train (e.g., blue) incorrectly causes predictions to appear on another train's route (e.g., red). The issue is persistent across savegame reloads. Expected behavior is that Wait Stops do not cause predictions to appear on unrelated routes. This was verified as fixed in a later beta build.
💬 Threads: [1.0.0-alpha5-rc2] Trains unload preview

4. [SPZ2-6308] — 👀 30% similar

For rails merge points and route configurators can stop predictions from working
To Do • Priority: High • Fix: None • Game: 1.0.3-rc3

Shape Previews can stop working when Rail Intersections and Route Configurators are used together on rails. To reproduce, start a new Classic Mode save in Regular scenario, enable cheats, and place a combination of Rail Intersections and Route Configurators. Removing a Rail Intersection can trigger the issue. Shape Previews should function correctly regardless of any combination of Rail Intersections and Route Configurators. The issue is still occurring and appears to be related to the presen...
💬 Threads: [1.0.3-RC3] Route Configurator may cause

5. [SPZ2-3208] — 👀 28% similar

Train predictions are lost after twister / loops
Done • Priority: Medium • Fix: 4 - Early Access • Resolution: Done

Train predictions are lost after passing through a Rail Twister or Rail Loop in the Supporter Edition. The visual green prediction line that shows the train's path does not continue beyond these special rail pieces. This issue affects both the Rail Twister and Rail Loop structures. The bug is not just visual - it also causes trains to potentially return by the wrong path after passing through these elements, affecting train routing behavior.

vast tusk Jun 1, 2026, 12:12 AM

oop looks like a duplicate

Game Version: 1.0.3-RC3

definitely [SPZ2-5391]

safe trenchBOT Jun 1, 2026, 2:37 PM

[SPZ2-5391] Train Previews are broken for wagons that come after spacers

🔁 This bug report has been marked as a duplicate of SPZ2-5391: Filler wagons block train predictions from shape/liquid wagons attached afterwards.

Spacer Wagons block Shape Previews from appearing on Shape Wagon Unloaders and Fluid Wagon Unloaders that are positioned after the Spacer Wagon in a train configuration. To reproduce, place a train se…

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Threads linked to this issue:

[1.0.0-A3-RC1] Spacer Wagon prevents preview for following wagons