Hello,
Thank you for making a bug report.
This is working as intended.
Tokens cannot be used for an XYZ as they cannot be XYZ material. That is one of their restrictions. When they are not on the field, they disappear. The state of being an XYZ material removes them from the field. Because of this is is not legal to use them for an XYZ summon.
The intent for Photon Santuary is to use them for the summoning requirement for Galaxy-Eyes Photon Dragon.
Thank you for helping make Omega be the best it can be.