Firefox is blocking page elements on some pages
Recently, Firefox has been blocking and/or not loading certain page elements on some websites. Canva and Google Teachable Machine (GTM) are the only site I've noticed having issues as of now, but I assume there may be others. Canva loaded perfectly fine in the past, but recently it has stopped loading the images of most graphics. (See included images) I have disabled all extensions; deleted cache, cookies, and site data; reset firefox to default settings, "Refreshed" firefox (the alternative option given when trying to uninstall it), restarted my PC, ensured firefox is up to date, and ensured my settings do not block cookies. I'm at a loss as to what is causing this issue. Both Canva and GTM display different reasons for content not being displayed, but I have a hunch that their issues are related. I have confirmed these sites load correctly on other browsers. I only experience these issues on firefox (both regular and developer edition). All suggestions and advice are appreciated, Thanks!
Some common errors on Canva that I see: Failed to load ‘https://media-public.canva.com/t_gKw/MAFSBct_gKw/1/s-1.svg’. A ServiceWorker passed an Error Response to FetchEvent.respondWith(). This typically means the ServiceWorker performed an invalid fetch() call. hjfept.27f97ba74f48070c.js:69:315
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://media-public.canva.com/t4BYI/MAEcE3t4BYI/1/s.svg. (Reason: CORS request did not succeed). Status code: (null).
Below is some info for trouble shooting:
{
"name": "Web Compatibility Interventions",
"version": "136.7.0",
"id": "webcompat@mozilla.org"
},
{
"name": "WebCompat Reporter",
"version": "2.1.0",
"id": "webcompat-reporter@mozilla.org"
}
],
"experimentalFeatures": [
[
"experimental-features-auto-pip",
"media.videocontrols.picture-in-picture.enable-when-switching-tabs.enabled",
false
],
[
"experimental-features-ime-search",
"browser.urlbar.keepPanelOpenDuringImeComposition",
false
],
[
"experimental-features-webrtc-global-mute-toggles",
"privacy.webrtc.globalMuteToggles",
false
],
[
"experimental-features-media-jxl",
"image.jxl.enabled",
false
],
[
"experimental-features-css-masonry2",
"layout.css.grid-template-masonry-value.enabled",
false
]
],
"application": {
"name": "Firefox",
"osVersion": "Windows_NT 10.0 26100",
"version": "136.0b3",
"buildID": "20250207091649",
"distributionID": "",
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0",
"safeMode": false,
"memorySizeBytes": 17087225856,
"diskAvailableBytes": 198202675200,
"updateChannel": "aurora",
"supportURL": "https://support.mozilla.org/1/firefox/136.0/WINNT/en-US/",
"osTheme": "",
"pointingDevices": [
"pointing-device-mouse",
"pointing-device-pen-digitizer"
],
"numTotalWindows": 1,
"numFissionWindows": 1,
"numRemoteWindows": 1,
"launcherProcessState": 0,
"fissionAutoStart": true,
"fissionDecisionStatus": "enabledByDefault",
"remoteAutoStart": true,
"policiesStatus": 1,
"keyLocationServiceGoogleFound": true,
"keySafebrowsingGoogleFound": true,
"keyMozillaFound": true
},
"processes": {
"remoteTypes": {
"gpu": 1,
"webIsolated": 8,
"rdd": 1,
"prealloc": 3,
"extension": 1,
"privilegedabout": 1,
"socket": 1,
"utility_jSOracle": 1,
"utility_audioDecoder_WMF": 1
},
"maxWebContentProcesses": 8
},
"normandy": {
"addonStudies": [],
"prefRollouts": [],
"prefStudies": [],
"nimbusExperiments": [],
"nimbusRollouts": []
},
"legacyUserStylesheets": {
"active": false,
"types": []
},
"remoteSettings": {
"serverURL": "https://firefox.settings.services.mozilla.com/v1",
"pollingEndpoint": "https://firefox.settings.services.mozilla.com/v1/buckets/monitor/collections/changes/changeset",
"serverTimestamp": null,
"localTimestamp": "\"1739113028548\"",
"lastCheck": "2025-02-09T17:01:58.000Z",
"mainBucket": "main",
"defaultSigner": "remote-settings.content-signature.mozilla.org",
"previewMode": false,
"collections": []
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