When playing in VR the spyglass is not useable and instead displays the screen shown below. This was tested in 1.19.2 with Fabric version 0.14.9

Mods Tested:
fabric-api-0.59.0+1.19.2.jar
mcxr-core-0.3.0+mc1.19.jar
mcxr-play-0.3.2+mc1.19.jar
sodium-fabric-mc1.19-0.4.2+build.16.jar

this is alredy known, currently there is no way of using spyglasses