1958234 - Drawing on canva layer in leaflet are getting duplicated when moving the map.

Status: UNCONFIRMED

(Core :: Graphics: Canvas2D, defect)

Description

[fusol13]

Attachment: image_2025-04-03_124451755.png

Steps to reproduce:

So i'm using leaflet, and canva to render stuff on map (polyline for example). And then i start moving the map, zoom in, zoom out.

Actual results:

Those rendered stuff on canvas are getting duplicated over and over again in diffrent spots, with diffrent sizes.

Expected results:

Canvas drawing should not duplicate.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Graphics: Canvas2D' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Sotaro Ikeda [:sotaro]]

Hi fusol13, thank you for reporting. Can you attach about:support to this bug? Does the problem happens every time you did the STR.

Comment 3

[Sotaro Ikeda [:sotaro]]

:lsalzman, can you comment to this bug?

Comment 4

[fusol13]

Attachment: { "securitySoftware": { "registeredAntiVirus": "Microsoft Defender Antivirus", "registeredAntiSpyware": "", "registeredFirewall": "Windows Firewall" }, "environmentVariables": { "MOZ_CRASHREPORTER_DATA_DIRECTORY": "C:\\Users\\Patryk\

(In reply to Sotaro Ikeda [:sotaro] from comment #2)
> Hi  fusol13, thank you for reporting. Can you attach about:support to this bug? Does the problem happens every time you did the STR.

Comment 5

[fusol13]

(In reply to Sotaro Ikeda [:sotaro] from comment #2)

Hi fusol13, thank you for reporting. Can you attach about:support to this bug? Does the problem happens every time you did the STR.

Hello, i attached about:support above. And yes, it happens everytime.

Comment 6

[fusol13]

This issue has also been reported by our testers and clients, so it is not just affecting me. It started happening on 01.04.2025 after newest update.

Comment 7

[Lee Salzman [:lsalzman]]

Do you have a testcase that we could use to try and reproduce the issue on our end?

Comment 8

[fusol13]

(In reply to Lee Salzman [:lsalzman] from comment #7)

Do you have a testcase that we could use to try and reproduce the issue on our end?

Sadly i don't have any

Comment 9

[Lee Salzman [:lsalzman]]

This may be a duplicate of bug 1959815

Comment 10

[fusol13]

(In reply to Lee Salzman [:lsalzman] from comment #7)

Do you have a testcase that we could use to try and reproduce the issue on our end?

I've got some testing account to our app, that might help you with finding the bug.

Login to https://tronik.atrax4.com/#/login with login: mozilla_test pass: mozilla_test

and then go to https://tronik.atrax4.com/#/tracks/61a66e4ada0f378a67a2fea9/1743458400/1744581540

If you move map up and down enough times you gonna see it happening.