Non empty array treated as empty when unpacking it as function arguments

[jonsa]

Bug report

I have a variadic function where I require at least one value to be given. The arguments for said function is processed through array_filter to remove empty values. Even though I check that the arguments are not empty, PHPStan reports my function to be called with zero parameters.

Code snippet that reproduces the problem

https://phpstan.org/r/ea071efb-3ce3-46da-b611-30c91f7f07a5

Expected output

I expect PHPStan to recognize the arguments array to be non-empty and the function to be called with at least one argument.