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docs: document pcov and imagick incompatibilities in known issues #2492

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2 changes: 2 additions & 0 deletions docs/known-issues.md
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Expand Up @@ -13,6 +13,7 @@ The following extensions are known not to be compatible with FrankenPHP:
| ----------------------------------------------------------------------------------------------------------- | --------------- |---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [imap](https://www.php.net/manual/imap.installation.php) | Not thread-safe | [javanile/php-imap2](https://github.com/javanile/php-imap2), [webklex/php-imap](https://github.com/Webklex/php-imap), [ImapEngine](https://github.com/DirectoryTree/ImapEngine) |
| [newrelic](https://docs.newrelic.com/docs/apm/agents/php-agent/getting-started/introduction-new-relic-php/) | Not thread-safe | - |
| [pcov](https://github.com/krakjoe/pcov) | Not thread-safe ([SIGSEGV in classic mode](https://github.com/krakjoe/pcov/issues/132)) | Collect coverage with the CLI SAPI (run PHPUnit/Pest outside FrankenPHP) |
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## Buggy PHP extensions

Expand All @@ -22,6 +23,7 @@ The following extensions have known bugs and unexpected behaviors when used with
|---------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|
| [datadog](https://github.com/DataDog) | Experiences instability when profiling FrankenPHP. This bug is [being tracked by DataDog](https://github.com/DataDog/dd-trace-php/issues/3729). |
| [blackfire](https://blackfire.io/) | [FrankenPHP support is in beta and not yet feature-complete](https://docs.blackfire.io/php/integrations/frankenphp). |
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| [imagick](https://github.com/Imagick/imagick) | ImageMagick's OpenMP threads conflict with FrankenPHP's threads, causing instability and crashes. Mitigate by disabling ImageMagick threading via `\Imagick::setResourceLimit(\Imagick::RESOURCETYPE_THREAD, 1)` or by compiling ImageMagick with `--disable-openmp`. OpenMP is already disabled in the static binaries and the official `apt`/`apk`/`rpm` packages, so only the Docker images and Homebrew installations are affected. |

## get_browser

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