Changed the order of import of the PBR.glsllib in the PBR material as it enables the texture lod extension and this fails on some GPU when it's not at the beginning of the shader.

jme3-core/src/main/resources/Common/MatDefs/Light/PBRLighting.frag

@@ -1,6 +1,6 @@
+#import "Common/ShaderLib/PBR.glsllib"
 #import "Common/ShaderLib/GLSLCompat.glsllib"
 #import "Common/ShaderLib/Parallax.glsllib"
-#import "Common/ShaderLib/PBR.glsllib"
 #import "Common/ShaderLib/Lighting.glsllib"