Cannot Create Document in Users Collection

[FlutterTester999]

Can we access your project?

• I give permission for members of the FlutterFlow team to access and test my project for the sole purpose of investigating this issue.

Current Behavior

Anonymous Auth is enabled and successfully signs users in — I can see a new UID generated and the isUserLoggedIn variable is set to true in the FlutterFlow debug panel. Email Sign-In is enabled. I have confirmed that firebase@flutterflow.io is authenticated and all permissions are correct. Firestore rules are correctly written and deployed. And the Firebase Schema Validation passed successfully. However, no matter how I attempt to create the user document (using the "create user document" toggle in Auth actions or a manual Create Document action using the UID), no document is created in the users collection. The action flow stops immediately after authentication, with no error shown. The new user appears in Firebase Authentication, but Firestore shows no corresponding document.

Expected Behavior

After authentication, a document should be created in the users collection using the UID as the document ID, either automatically via the toggle or manually via the Create Document action. The action flow should continue as expected.

Steps to Reproduce

1. Connect to Firebase
2. Enable anonymous Auth
3. Create a users collection
4. Under "Firestore Settings", enable Users Collection
5. Deploy Firestore Rules
6. Create a simple sign-in page with a single button
7. For that button's action, add a "Auth Login" or "Auth Create Account" action followed by any other action (i.e. show snackbar, play sound, or navigate to different page)
8. In this action: Select anonymous for Auth provider, toggle "Create user document" ON, and select "users" for the collection
9. Run a test & push the button
10. Observe that a uid is created but no document is created in the users collection. Observe that the action flow is stopped.

Reproducible from Blank

• The steps to reproduce above start from a blank project.

Bug Report Code (Required)

IT4whcn135NPvuZE17r+au9ViicWMjshaIE/mMFTZCs9f5CvOpYUec/6PhNtTcCoYFZle02Mp14E+dLviPH9FfYFAzCdY75DzJdQVQ7zVlunM7mTF7iKRHwnP55NFUi10Z+JsRFSItVtWXMu2U+lOOSiTgXZNoT4PlQ4Sq/LZO4=

Visual documentation

Environment

- FlutterFlow version: v6.1.15 (released July 25, 2025)
- Platform: Web
- Browser name and version: Microsoft Edge Version 138.0.3351.95

Additional Information

Without the ability to log users in and collect usage data I can't really do much at all ...

[FlutterTester999]

It now appears that NONE of the "create document" actions are working .... I assumed the issue was specific to the users collection, but I appear to be unable to create documents to any existing collection (even though, as mentioned, the schema validation passes and the existing data from the collections in Firestore are appearing properly under "content management" in Flutterflow).

[Juansarmi]

Hi! Sorry to hear you're experiencing this issue.

Unfortunately, I'm not able to reproduce the error on my end. It might be something specific to your project.

In this case, I recommend reaching out to support via the in-app chat or by email at support@flutterflow.io . They have the tools and access needed to take a closer look at your specific case.

Best regards.

[FlutterTester999]

@Juansarmi thanks - I was worried that would be the case. I did already reach out to support, but they are not very timely in their responses. Do you see ANYTHING in my screenshots that could point to the issue? I'm not getting any errors and my Firestore setup is pretty standard. It's not like I'm trying to do something fancy or out of the ordinary here ...

[Juansarmi]

Hello again,

On my side, I’d recommend checking that you have Firebase Auth permissions enabled for anonymous sign-in, and that your Firestore rules are properly deployed in your FlutterFlow project.

Keep in mind that if you want an anonymous user to create a 'user' document, your Firestore rules need to allow 'create' operations accordingly — for example, you may need to set them to 'everyone', depending on your needs.

Hope this helps!

Best regards