Letter Spacing Control for Site Title and Site Tagline is not visible in Sidebar

[thisissandip]

Description

Letter Spacing Control for Site Title and Site Tagline is not visible in Inspector Control (Sidebar)

Step-by-step reproduction instructions

1. Enable letter spacing in theme.json for site title and site tagline by following the steps in Add Letter-spacing and enable this for site title and site tagline #31118 or use this gist
2. Add Site title and Site tagline blocks
3. See the letter-spacing control is not visible in the sidebar

Expected behaviour

Letter Spacing control should be there in the sidebar

Actual behaviour

letter-spacing control is not visible in the sidebar

Screenshots or screen recording (optional)

WordPress information

• WordPress version: 5.7.2
• Gutenberg version: 10.8
• Are all plugins except Gutenberg deactivated? Yes
• Are you using a default theme (e.g. Twenty Twenty-One)? No, I am using TT1.

Device information

• Device: Desktop
• Operating system: MacOS Catalina 10.15.7
• Browser: Chrome 91.0

[aaronrobertshaw]

I noticed this while testing changes removing custom prefixes from theme.json properties that didn't need it.

A fix is included in that PR: #34485

Fixed in #34515