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title: Release notes for Grafana 9.1.5
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# Release notes for Grafana 9.1.5

### Features and enhancements

- **Alerting:** Sanitize invalid label/annotation names for external alertmanagers. [#54537](https://github.com/grafana/grafana/pull/54537), [@JacobsonMT](https://github.com/JacobsonMT)
- **Alerting:** Telegram: Truncate long messages to avoid send error. [#54339](https://github.com/grafana/grafana/pull/54339), [@ZloyDyadka](https://github.com/ZloyDyadka)
- **DisplayProcessor:** Handle reverse-ordered data when auto-showing millis. [#54923](https://github.com/grafana/grafana/pull/54923), [@leeoniya](https://github.com/leeoniya)
- **Heatmap:** Add option to reverse color scheme. [#54365](https://github.com/grafana/grafana/pull/54365), [@leeoniya](https://github.com/leeoniya)
- **PluginLoader:** Alias slate-react as @grafana/slate-react. [#55027](https://github.com/grafana/grafana/pull/55027), [@kaydelaney](https://github.com/kaydelaney)
- **Search:** Add substring matcher, to bring back the old dashboard search behavior. [#54813](https://github.com/grafana/grafana/pull/54813), [@ArturWierzbicki](https://github.com/ArturWierzbicki)
- **Traces:** More visible span colors. [#54513](https://github.com/grafana/grafana/pull/54513), [@joey-grafana](https://github.com/joey-grafana)

### Bug fixes

- **Alerting:** Fix incorrect propagation of org ID and other fields in rule provisioning endpoints. [#54603](https://github.com/grafana/grafana/pull/54603), [@alexweav](https://github.com/alexweav)
- **Alerting:** Resetting the notification policy tree to the default policy will also restore default contact points. [#54608](https://github.com/grafana/grafana/pull/54608), [@alexweav](https://github.com/alexweav)
- **AzureMonitor:** Fix custom namespaces. [#54937](https://github.com/grafana/grafana/pull/54937), [@asimpson](https://github.com/asimpson)
- **AzureMonitor:** Fix issue where custom metric namespaces are not included in the metric namespace list. [#54826](https://github.com/grafana/grafana/pull/54826), [@andresmgot](https://github.com/andresmgot)
- **CloudWatch:** Fix display name of metric and namespace. [#54860](https://github.com/grafana/grafana/pull/54860), [@sunker](https://github.com/sunker)
- **Cloudwatch:** Fix annotation query serialization issue. [#54884](https://github.com/grafana/grafana/pull/54884), [@sunker](https://github.com/sunker)
- **Dashboard:** Fix issue where unsaved changes warning would appear even after save, and not being able to change library panels. [#54706](https://github.com/grafana/grafana/pull/54706), [@torkelo](https://github.com/torkelo)
- **Dashboard:** Hide overflow content for single left pane. [#54882](https://github.com/grafana/grafana/pull/54882), [@lpskdl](https://github.com/lpskdl)
- **Loki:** Fix a bug where adding adhoc filters was not possible. [#54920](https://github.com/grafana/grafana/pull/54920), [@svennergr](https://github.com/svennergr)
- **Reports:** Fix handling expired state. (Enterprise)