There was a regression between a18 and a19 with Enlighten and URP where not all surfaces are contributing to the GI. If you see the reference images below, they are missing the contribution from the bounces from the red wall on the right.

Failed tests:
150_Lighting_EnlightenEmission
152_Lighting_EnlightenEnvironment

To reproduce:
Create a project with 2021.2 a19 and open the following project https://github.com/Unity-Technologies/Graphics/tree/master/TestProjects/UniversalGraphicsTest_Lighting
Then open either scene listed above and deploy to android device.

https://yamato.cds.internal.unity3d.com/jobs/902-Graphics/tree/master/.yamato%252Furp_lighting-android-opengles3.yml%2523URP_Lighting_Android_OpenGLES3_Standalone_cache_il2cpp_Linear_trunk/6989340/job/artifacts

It was bisected in the Graphics package to the bump from a18 to a19:
https://github.com/Unity-Technologies/Graphics/commit/318c303c05db7a9e7a79a275012a44b7f4e6a80e
https://evergreen.ds.unity3d.com/bisections/04de8f319dfa8bbb927cb134f73fdedcbbee122a2159bdfa572eae62908126e9#318c303c05db

The expected and actual results can be seen in the attached images.