Electrification display seems incoherent

[maelysLeratRosso]

What happened?

I create this train on small_infra : train small infra bug electrification.json

It uses an electrical rolling stock (requires electrification). On the map, it appears that there is no electrification on the path, but the pathfinding succeeded.

It does not look like a pathfinding problem, but more like a display problem. For example, when one goes to the infrastructure editor on this infra and opens the edition mode, suddenly the electrification covers this track section :

Before entering edition mode :

After entering edition mode (without changing anything about the electrification) :

What did you expect to happen?

I expect the electrification display to be consistent with the tracks that can be used by my train

How can we reproduce it (as minimally and precisely as possible)?

Import the previous train on small_infra and observe

On which environments the bug occurs?

Recette (SNCF)

On which browser the bug occurs?

Google Chrome

OSRD version (top right corner Account button > Informations)

bf0ab67

[maelysLeratRosso]

Maybe linked to this ?

[bougue-pe]

For the criticality, this bug also appears on France.

On small-infra: Not sure about the cause, but the length of TH1 is 5000m (from data) and the "GPS-length" is 484,1 + 1112 + 491,7 + 1444,8 = 3532,6

When changing the electrification to just cover TH1, the display is OK ✅.
When covering just TH0 and TH1, the display is KO ❌.
It looks like the response from the POST to http://localhost:4000/api/infra/1/objects/Electrification is OK (no matter if TH1 is alone in the electrification or not).

It looks like it's not related to inconsistencies between track's coords and its length, and it's probably between front and editoast, as the layer are correct in PG for infra_layer_electrification:

[bougue-pe]

In all cases, the electrification seems to disappear on an entire GPS-section of the track-section (first or last).
Here is the screenshot for France (infra145 in recette) at Merrey:

[Synar]

Possible duplicate of #6654

[Synar]

Interestingly this also depends on the zoom level, so definitely some sort of display issue.

Screencast_20250121_192555.webm

I'll continue investigating