Affected app
Name: Jodel
Package id: com.tellm.android.app

Describe the bug
For Android 11(?) Jodel seem to have switched their login model, as they cannot access the phone ID or so anymore.
Here is their explanation: https://jodel.com/app/sign-in-explanation-android/

Instead, you need to use a Google or email login.

To Reproduce

1. Install and open Jodel on an Android 11 device.
2. Tap on "login with mail".
3. You receive a mail with a link like this: https://ae3ts.app.goo.gl/?link=https://tellm-android.firebaseapp.com/__/auth/action?apiKey%3*****SAME_STRING******SA%26mode%3DsignIn%26oobCode%3DVjBo*****************************BA%26continueUrl%3Dhttps://jodel.com/app/magic-link-fallback%26lang%3Den&apn=com.tellm.android.app&amv=5.116.0
4. Open that link on your phone.

The link is redirected to this intend when opened on with a phone user agent: intent://ae3ts.app.goo.gl/?link=https://tellm-android.firebaseapp.com/__/auth/action?apiKey%3*****SAME_STRING******SA%26mode%3DsignIn%26oobCode%3DVjBo*****************************BA%26continueUrl%3Dhttps://jodel.com/app/magic-link-fallback%26lang%3Den&apn=com.tellm.android.app#Intent;package=com.google.android.gms;scheme=https;S.browser_fallback_url=https://play.google.com/store/apps/details%3Fid%3Dcom.tellm.android.app&pcampaignid%3Dfdl_long&url%3Dhttps://tellm-android.firebaseapp.com/__/auth/action%3FapiKey%253*****SAME_STRING******SA%2526mode%253DsignIn%2526oobCode%253DVjBo*****************************BA%2526continueUrl%253Dhttps://jodel.com/app/magic-link-fallback%2526lang%253Den;end; (the last string is also the same as the unmarked one above)

Optionally open it/copy it into some "special" browser, i.e. I tried to open it with these browsers:

• Firefox for Android: white screen, I'm not sure whether it opened the intend (in any case, make sure it has "Open in apps" enabled)
• LineageOS browser: Tries to search the URL and DuckDuckGo reports the search term is too long then 🤦
• DuckDuckGo browser: cannot open intend
• Bromite: also not really successful (did not remember what happened)
• finally, Firefox Klar/Focus is a good try: It explicitly shows you a warning that this is going to open an app/go outside of an app that might violate your privacy or so. You can confirm that with "ok".

The link seems to be a Firebase dynamic link for Firebase authentication via mail that is intended to be expected by Google Play.
See https://firebase.google.com/docs/auth/web/email-link-auth, respectively https://firebase.google.com/docs/auth/android/email-link-auth and https://firebase.google.com/docs/dynamic-links for the doc I found about that…

Maybe microG supports email login, but not these dynamic links?

Logcat (I can provide you more, if needed) when opened with Firefox Klar/Focus:

08-29 13:50:52.673  1385  6285 I ActivityTaskManager: START u0 {act=android.intent.action.VIEW cat=[android.intent.category.BROWSABLE] dat=https://ae3ts.app.goo.gl/... flg=0x10000000 pkg=com.google.android.gms (has extras)} from uid 10227
08-29 13:50:52.681 18992 18992 E Focus   : failed to start third party app activity
08-29 13:50:52.681 18992 18992 E Focus   : android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW cat=[android.intent.category.BROWSABLE] dat=https://ae3ts.app.goo.gl/... flg=0x10000000 pkg=com.google.android.gms (has extras) }
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2067)
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.app.Instrumentation.execStartActivity(Instrumentation.java:1727)
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.app.Activity.startActivityForResult(Activity.java:5314)
08-29 13:50:52.681 18992 18992 E Focus   : 	at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:2)
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.app.Activity.startActivityForResult(Activity.java:5272)
08-29 13:50:52.681 18992 18992 E Focus   : 	at androidx.activity.ComponentActivity.startActivityForResult(ComponentActivity.java:1)
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.app.Activity.startActivity(Activity.java:5658)
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.app.Activity.startActivity(Activity.java:5611)
08-29 13:50:52.681 18992 18992 E Focus   : 	at mozilla.components.feature.app.links.AppLinksUseCases$OpenAppLinkRedirect.invoke$default(AppLinksUseCases.kt:8)
08-29 13:50:52.681 18992 18992 E Focus   : 	at mozilla.components.feature.app.links.AppLinksFeature$handleAppIntent$doOpenApp$1.invoke(AppLinksFeature.kt:7)
08-29 13:50:52.681 18992 18992 E Focus   : 	at mozilla.components.feature.app.links.SimpleRedirectDialogFragment$onCreateDialog$$inlined$with$lambda$1.onClick(SimpleRedirectDialogFragment.kt:3)
08-29 13:50:52.681 18992 18992 E Focus   : 	at androidx.appcompat.app.AlertController$ButtonHandler.handleMessage(AlertController.java:3)
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.os.Handler.dispatchMessage(Handler.java:106)
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.os.Looper.loop(Looper.java:223)
08-29 13:50:52.681 18992 18992 E Focus   : 	at android.app.ActivityThread.main(ActivityThread.java:7664)

Expected behavior
According to the wiki page Firebase Auth (using email login is supported.

Screenshots
N/A

System
Android Version: 11
Custom ROM: LineageOS for microG 18.1 (2021-08-11)
Fairphone 3 (FP3)

microG
microG Core version: v0.2.22.212658.
microG Self-Check results: All ticked.

Additional context
Ref #1281 and #1281