It's not possible to right click an effect parameter to reset it in the effect panel, right after loading a saved project.
1 - Create a new project, new comp and new solid
2 - Apply an effect to that solid, (it doesn't matter which effect)
3 - Change one of the parameters to anything different from default,
4 - Save the project,
5 - Load the saved project
6 - Open the effect panel
7 - Right mouse click on the parameter from step 3 and hid "Reset"
8 - Nothing happens
9 - Change anything in any parameter, it doesn't have to be the parameter from step 3
10 - Reset now works for all parameters
The reset should work from the start.
I have a few plugins installed, but I don't think this is related.