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I want to know why some hydration errors still appear in my project after I enable the React hydration errors inbound filter.

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The React hydration inbound filter only drops a fixed set of common React hydration messages, such as minified invariant URLs 418, 419, 421, 422, 423, and 425. Other hydration-related errors are still accepted.

For those remaining error events, drop them in the SDK with <code>ignoreErrors</code> or <code>beforeSend</code>, using the minified message rather than the readable UI text. See <a href="https://www.sentry.help/en/articles/13965212-why-aren-t-some-hydration-errors-being-dropped-by-the-sdk">Why aren't some hydration errors being dropped by the SDK?</a>.

If you still see Hydration Error issues with Session Replay on, they may be Replay Issues created by Create Hydration Error Issues. Inbound filters do not stop those. See <a href="https://www.sentry.help/en/articles/13964240-why-am-i-still-seeing-hydration-error-issues">Why am I still seeing Hydration Error issues?</a>.

1. For those remaining error events, drop them in the SDK with <code>ignoreErrors</code> or <code>beforeSend</code>, using the minified message rather than the readable UI text. See <a href="https://www.sentry.help/en/articles/13965212-why-aren-t-some-hydration-errors-being-dropped-by-the-sdk">Why aren't some hydration errors being dropped by the SDK?</a>.
2. If you still see Hydration Error issues with Session Replay on, they may be Replay Issues created by Create Hydration Error Issues. Inbound filters do not stop those. See <a href="https://www.sentry.help/en/articles/13964240-why-am-i-still-seeing-hydration-error-issues">Why am I still seeing Hydration Error issues?</a>.

Overview of the filter type: <a href="https://docs.sentry.io/concepts/data-management/filtering/" rel="nofollow noopener noreferrer" target="_blank">Inbound Filters</a>.

Why aren't my inbound filters filtering out all hydration errors?

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Why aren't my inbound filters filtering out all hydration errors?

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