Rendering the scenes in Houdini20, which was created in Houdini19, shows unexpected results

[ShinFujieda]

When rendering the scene in Houdini20, created in Houdini19, we see a different behavior from Houdini19.
For example, rendered images on Houdini 20 shows the following behaviors:

• Lighting and objects are too bright
• Some objects are pixelated

[ShinFujieda]

Creating new scenes on Houdini20 seems to work correctly.
We need to add "rpr" to the "Tab Menu" in "Material Library" node to use RPR materials though.