Is React 19 & R3F v9 Supported? Or am I Doing It Wrong™

[sxxov]

hi! i've been eyeing drei since i've started using three.js, & i've finally gone through the process of getting up to speed with react & r3f to be able to take advantage of this project. since i'm starting from scratch, i went with the decision of targetting react 19 after finding out r3f has betas & RC's out to support the new react version.

however, after plugging in various drei components like MeshPortalMaterial & RenderTexture (as well as EffectComposer, but i'm not sure if this is the correct place to ask), they required manual patches to their usages of __r3f as they tried to access undefined properties (e.g. object.parent is assumed to be Object3D with another __r3f property, but is actually an object with a object property that points to the Object3D).

my question is, am i configuring/doing something wrong? or are the utilities here not compatible with my setup yet? the following are some package versions that might be of interest:

"@react-three/drei": "^9.116.2",
"@react-three/fiber": "^9.0.0-rc.1",
"@react-three/postprocessing": "^2.16.3",
"next": "^15.0.3",
"postprocessing": "^6.36.4",
"react": "^19.0.0-rc-603e6108-20241029",
"react-dom": "^19.0.0-rc-603e6108-20241029",
"three": "^0.170.0",
"three-stdlib": "^2.34.0",