ID 524726 - Options > Render Animation on the Preview Render window renders each frame brighter than the last.

Problem summary
Options > Render Animation on the Preview Render window renders each frame brighter/with more gamma than the last.
 
Customer reported version
modo.16.0v3
 
Customer reported platform
windows10
 
Steps to reproduce
 
1) Open Modo and create a Sphere item.

2) Create a Plane item and move it behind the Sphere:

3) Press F8 to open the Preview render window.
 
4) Move the render camera to face the Sphere and select Options > Render Animation, select OK to the default settings and save it in a directory of your choice.
 
5) Once the render has completed check the directory and notice that each image gets brighter/more gamma than the last.

 
Expected behaviour
The brightness/gamma shouldn't change.
 
Actual behaviour
The brightness/gamma increases with each render.
 
Workaround
Unknown. 
 
Reproduced by support
This bug has been reproduced in:
16.0v3 - Windows 10, macOS 11.7 (Big Sur)
14.0v1 - Windows 10, macOS 11.7 (Big Sur)
 
Earliest version tested
14.0v1 - This issue appears to be in all tested versions of the product.