Problem with PowerVR SGX 530 GPU

Hi I have a weird issue with Motorola Defy and LG LG Optimus Black P970.(both use LG Optimus Black P970 GPU and I guess this causes my problem). I started from the FrameMarkers tutorial, I use libgdx to render a 3D model when a marker is detected and I have some buttons on top of everything. The app works well on many types of GPUs - Adreno 205, 220 and SGX 540, but on the above 2 devices the [COLOR=Red]buttons become invisible [/COLOR]. More annoying is that I can Tap on them (and the click listeners execute as normal). In the camera Activity, I am loading the layout from xml and adding a single glView(GL11) to an Framelayout (similar to the glview used in the FrameMarkersRenderer). I then use this glview to render the 3d model. I spent a lot of time on this and tried every this I could imagine, but nothing worked. Any help / idea will be really appreciated. Thank you.