HTML block end tags on a line that begins with a space stop parsing of the next line

[makyo]

What version of goldmark are you using?

1.1.18

What version of Go are you using?

1.13.1

What operating system and processor architecture are you using?

Ubuntu 19.04 arm64

What is happening?

When a line with a closing </pre> begins with space, any immediately following markdown is not formatted.

--- FAIL: TestSpec (0.01s)
    testutil.go:133: ============= case 119 ================
        Markdown:
        -----------
        <pre>
        Some
            </pre>
        
        > okay.
        
        
        Expected:
        ----------
        <pre>
        Some 
        </pre>
        <blockquote>
        <p>okay.</p>
        </blockquote>
        
        
        Actual
        ---------
        <pre>
        Some
            </pre>
        
        > okay.

Did you confirm your output is different from CommonMark online demo or other official renderer correspond with an extension?:

Yes.