Values not working in scale_*_manual

While i'm using values in scale_*_manual getting unused value in legend in for loop. Please do the needful.

The below code is without scale_color_manual and the result attached below the code.


When i use the scale_color_manual and I'm getting the additional legend, in previous versions it was not there .
After updating to latest version of ggplot2, it was started.

values = c("NON-NULL"="black","NULL"="grey60"),drop=TRUE)


To help us help you, could you please prepare a reproducible example (reprex) illustrating your issue? Please have a look at this guide, to see how to create one:

It is the problem with ggplot2 3.3.5, It is working when I re install to 3.3.3

What is your version of RStudo? You may have to update it.

My R studio version is, Which is latest

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