Whole browser becomes lagging on 11.3.0

[apeiniger]

Operating System

macOS Sequoia 15.2

Environment (if applicable)

Arc

Firebase SDK Version

11.3.0

Firebase SDK Product(s)

Firestore

Project Tooling

Vite

Detailed Problem Description

Since the update to 11.3.0 our app became very unresponsive and CPU intensive. A downgrade to 11.2.0 fixes the problem.

Steps and code to reproduce issue

Upgrade from 11.2.0 to 11.3.0

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[dlarocque]

Hi @apeiniger, thanks for reporting this issue. It's really helpful to know that this issue only occurs in 11.3.0. This may be related to #8691. Could you confirm whether your app reaches the code path compareUtf8Strings()? If not, please share what other products are used in your app.

Also, if possible, could you provide a minimal app that is affected by this performance issue?

[apeiniger]

Hi @apeiniger, thanks for reporting this issue. It's really helpful to know that this issue only occurs in 11.3.0. This may be related to #8691. Could you confirm whether your app reaches the code path compareUtf8Strings()? If not, please share what other products are used in your app.

Also, if possible, could you provide a minimal app that is affected by this performance issue?

@dlarocque What is the easiest way to find out if our app reaches the mentioned code path?

We mainly use Authentication and Firestore. On the Firestore side we have about 10 onSnapshot calls running in parallel, otherwise it's only standard Firestore calls.