Updated iOS now getting WebGL errors
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@schilpat I saw the new update and installed it however there’s still an issue and another error in the log
{
"errorID": "canvas-context-is-lost",
"overlay": "wind",
"runningPhase": "3_redrawFinished",
"timestamp": 1761819572658,
"runningMinutes": 0,
"type": "customLogError",
"msg": "Canvas context is lost",
"url": "capacitor://app-webview.windy.com",
"ver": "47.2.1",
"target": "mobile",
"platform": "ios",
"device": "mobile",
"latestBcast": "store: timestamp (19ms ago at 1761819572639)
store: timestamp (19ms ago at 1761819572639)
store: availLevels (19ms ago at 1761819572639)
store: product ecmwf (19ms ago at 1761819572639)
bcast: redrawFinished (2ms ago at 1761819572656)",
"module": "CanvasLayer"
}Also this error…
{
"errorID": "compile-shader-shmulti-is-critical-true-error-repeate",
"overlay": "wind",
"runningPhase": "2_dependenciesResolved",
"timestamp": 1761819572655,
"runningMinutes": 0,
"type": "customLogError",
"msg": "Compile shader 'shMulti' (is critical: true) error: (repeated)",
"repeated": 10,
"url": "capacitor://app-webview.windy.com",
"ver": "47.2.1",
"target": "mobile",
"platform": "ios",
"device": "mobile",
"latestBcast": "store: calendar (16ms ago at 1761819572639)
store: timestamp (16ms ago at 1761819572639)
store: timestamp (16ms ago at 1761819572639)
store: availLevels (16ms ago at 1761819572639)
store: product ecmwf (16ms ago at 1761819572639)",
"module": "TileRenderer",
"stack": "createProgramObj@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:251896
compileShader@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:270488
onWebGlInit@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:266024
init@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:265129
onopen@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:283439
a@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:248000
@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:248414
r@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:1455
s@capacitor://app-webview.windy.com/v/47.2.1.mob.1b64/mobile.js:1:1659"
} -
@MetalAnon Hi, since the error appeared after updating the iOS version, and the version 18.7.2 (RC) is not a stable version, there is a high chance that something related to WebGL got messed up by Apple in that version. We cannot do much about it :/ We always recommend using stable OS versions to prevent these problems.
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Have filed feedback (FB20873873) with Apple in relation to this issue. If possible I'd suggest others do the same.
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S SimonUrbanek referenced this topic on
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I was afraid that’s where we end up. Thank you for checking that. I’ll see what I can do about filing bug with Apple and thank you to the other two participated in this thread much obliged. Have a good day.
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Hey, I’m having trouble finding the proper page to post Apple feedback for this problem. You have a link to your feedback?? Thanks!
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@dugeem
Reported also FB20875716 -
@MetalAnon
It is an Apple pre load app. I tried to share it here but it wouldn’t copy and I couldn’t find it in the App Store. Try this link https://feedbackassistant.apple.com/ -
Apple appears to have fixed the WebGL issue in a new build of 18.7.2 (22H124) which has now been publicly released.
NB you may need to reset iOS Beta Updates to Off to make the updated release visible
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Still the same problem. Any suggestion except upgrade to iOS 26?
{
"errorID": "compile-shader-shcloudtop-is-critical-true-error",
"overlay": "wind",
"runningPhase": "2_dependenciesResolved",
"timestamp": 1762617508263,
"runningMinutes": 0,
"type": "customLogError",
"msg": "Compile shader 'shCloudtop' (is critical: true) error:",
"url": "capacitor://app-webview.windy.com#?50.088,14.412,5",
"ver": "47.2.1",
"target": "mobile",
"platform": "ios",
"device": "mobile",
"latestBcast": "store: startupWeatherShown (10ms ago at 1762617508253)
bcast: rqstOpen startup-articles (10ms ago at 1762617508253)
bcast: paramsChanged (6ms ago at 1762617508257)
bcast: leaflet-paramsChanged (6ms ago at 1762617508257)
store: visibleProducts (5ms ago at 1762617508258)",
"module": "TileRenderer",
"stack": "createProgramObj@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:251896
compileShader@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:270488
onWebGlInit@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:266324
init@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:265129
onopen@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:283439
a@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:248000
@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:248414
r@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:1455
s@capacitor://app-webview.windy.com/v/47.2.1.mob.91c6/mobile.js:1:1659"
} -
@schilpat same issues here. App does not load ANY layer data. iPhone 13Pro 256g. iOS 18.7.2 (22H123) Have set beta update to off then two fresh installs of app no help.
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@nathan96753 Unfortunately iOS 18.7.2 (22H123) is the issue. Restart your phone and then check again for iOS updates (Settings / General / Software Update). If 18.7.2 is visible install it.
If you’re not offered the updated build 22H124 then this would point to an Apple release issue - file feedback with Apple.
