not sure why this is set to "fixed" because still a lot of people seem to have issues with this.
this one worked for me:

Unity 2019.4.19
URP 7.5.2

yourproject\Library\PackageCache\com.unity.render-pipelines.universal@7.5.2\Runtime\UniversalRenderPipelineCore.cs

change code from

static RenderTextureDescriptor CreateRenderTextureDescriptor(Camera camera, float renderScale,
bool isStereoEnabled, bool isHdrEnabled, int msaaSamples, bool needsAlpha)
{
RenderTextureDescriptor desc;
GraphicsFormat renderTextureFormatDefault = SystemInfo.GetGraphicsFormat(DefaultFormat.LDR);
// NB: There's a weird case about XR and render texture
// In test framework currently we render stereo tests to target texture
// The descriptor in that case needs to be initialized from XR eyeTexture not render texture
// Otherwise current tests will fail. Check: Do we need to update the test images instead?
if (isStereoEnabled)
{
desc = XRGraphics.eyeTextureDesc;
renderTextureFormatDefault = desc.graphicsFormat;
}

TO

static RenderTextureDescriptor CreateRenderTextureDescriptor(Camera camera, float renderScale,
bool isStereoEnabled, bool isHdrEnabled, int msaaSamples, bool needsAlpha)
{
RenderTextureDescriptor desc;
GraphicsFormat renderTextureFormatDefault = SystemInfo.GetGraphicsFormat(DefaultFormat.LDR);
// NB: There's a weird case about XR and render texture
// In test framework currently we render stereo tests to target texture
// The descriptor in that case needs to be initialized from XR eyeTexture not render texture
// Otherwise current tests will fail. Check: Do we need to update the test images instead?
if (isStereoEnabled)
{
desc = XRGraphics.eyeTextureDesc;
desc.msaaSamples = msaaSamples;
renderTextureFormatDefault = desc.graphicsFormat;
}

Broken in 2019.4.22f1 with URP 7.5.3. Have to force backbufferMsaaSamples in ForwardRenderer.cs to fix.

fix didn't work

This is a work around reported from QA to fix this issue. It can be attached to any gameobject.

public class AAFix : MonoBehaviour{

void Start() {
StartCoroutine("Fix");
}

IEnumerator Fix() {

UnityEngine.XR.XRSettings.eyeTextureResolutionScale = 0.5f; // Any value, just to trigger the refresh
yield return new WaitForEndOfFrame(); // Needed to apply the changes
UnityEngine.XR.XRSettings.eyeTextureResolutionScale = 1f; // Use your target resolution here
Destroy(this);
}
}