UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36

Steps to reproduce the problem:
1. Open DevTools
2. Open Network tab
3. Make request (index.html?foo=val1;bar=val2)
4. Click on request
5. Look under "Query String Parameters"

What is the expected behavior?
Should show:
foo: val1
bar: val2

What went wrong?
Instead shows:
foo: val1;bar=val2

Did this work before? No 

Chrome version: 63.0.3239.84  Channel: stable
OS Version: 10.0
Flash Version: 

I am following what the W3C recommended to use semicolons as a parameter separator. The parameters should be split on both ; and & and then parsed for key=value. It seems to me that the semicolon is not being respected as a separator. Several popular web servers respect the use of semicolon as a separator.