hide_table_of_contents: true does not expand column to page width

[MichaelBaj]

🐛 Bug Report

Adding the front matter tag hide_table_of_contents: true does not expand column to page width.

To Reproduce

1. Create any page with content, preferably with headings >2.
2. Observe right hand TOC and formatting
3. Add meta tag hide_table_of_contents: true
4. Observe the right hand TOC is no longer present, yet the contents are still fixed at 75% page width

Expected behavior

I expected the contents to expand to the row width, which would have been 100% of the remaining space, as is depicted in the original feature request on their CONTRIBUTING page: #2012

Actual Behavior

Removing TOC kept the page width the same as can be seen in this example:
https://docs.128technology.com/docs/api_rest_4.2.0

Your Environment

• Docusaurus version used: 2.0.0-alpha.54
• Environment name and version: Chrome 81.0.4044.138, Node.js 13.8.0
• Operating system and version: macOS 10.15.4

Reproducible Demo

You can see the results https://docs.128technology.com/docs/api_rest_4.2.0

[yangshun]

I think this is a regression in the UI when @lex111 was tweaking it to make the code block width work. The test plan of #2012 showed that it was working.

[ysulyma]

I'm still experiencing this in Docusaurus 2.0.1.

[slorber]

@ysulyma then create a repro and show screenshots of expected VS actual behavior. Your comment is not really actionable for us

To me it works as intended