After further testing I verified the following:

1. I am using WWW-Mechanize-Chrome-0.65
2. I am using Chrome 87.0.4280.141 (Official Build) (64-bit)
3. Adding the $mech->sleep(5); after the $post_response->is_success || die $post_response->status_line; as you have done above fixed my problem. Is this sleep() call always necessary after a get() due to the following (taken from the documentation):

Note that the returned HTTP::Response object gets the response body filled in lazily, so you might have to wait a moment to get the response body from the result. This is a premature optimization and later releases of WWW::Mechanize::Chrome are planned to fetch the response body immediately when accessing the response body.

Finally, I noticed that if I change this line: 

$mech->click({id => 'ProductSelect-option-color-solar-8568844557'});

[download]

to the following: 

my $response = $mech->click({id => 'ProductSelect-option-color-solar-8
+568844557'});

$mech->sleep(5);

print Dumper($response);

if ($response->is_success)
{
    printf("click succeeded\n");
}

[download]

the output is: 

> ./www_mechanize_chrome_testcase.pl
$VAR1 = [];
Can't call method "is_success" on unblessed reference at ./www_mechani
+ze_chrome_testcase.pl line 27.

[download]

Is that expected? If $mech->click() returns an HTTP::Response object, shouldn't I be able to call the is_success method?

In reply to Re^2: help clicking radio buttons using WWW::Mechanize::Chrome by Special_K
in thread help clicking radio buttons using WWW::Mechanize::Chrome by Special_K

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