diff --git a/release-notes/elastic-observability/known-issues.md b/release-notes/elastic-observability/known-issues.md
index 6789a7e26e..fceb23648d 100644
--- a/release-notes/elastic-observability/known-issues.md
+++ b/release-notes/elastic-observability/known-issues.md
@@ -16,6 +16,19 @@ Known issues are significant defects or limitations that may impact your impleme
 
 % :::
 
+:::{dropdown} Synthetics - Package policies for project monitors unintentionally deleted
+Applies to: {{stack}}
+
+**Details**
+
+When upgrading to an affected version, {{kib}} might unintentionally delete package policies for Synthetics project monitors during package policy cleanup. In deployments with many project monitors (10,000+ package policies in a single space), attempts to recreate deleted policies can fail and leave your instance in a broken state.
+
+A fix for this issue was implemented in [#248762](https://github.com/elastic/kibana/pull/248762).
+
+**Workaround**<br>
+Trigger package policy recreation by making a dummy update to the affected project monitors (for example, add a tag). Alternatively, trigger recreation by making a dummy edit to the private location configuration.
+
+:::
 
 :::{dropdown} Error when using the Kubernetes OpenTelemetry quickstart onboarding flow
 Applies to: {{stack}}