Description

After adding a Shortcode block, switching dark mode on and then off produces a crash. I checked this behaviour with the rest of blocks and looks like it only happens with this one.

I also tested on production version 16.7 and it's also happening here so it's not a new regression.

Sentry issue: https://sentry.io/organizations/a8c/issues/1634562844/?project=1438083&project=1438088&query=is%3Aunresolved+user.email%3Afluiddot%40gmail.com&statsPeriod=14d

Step-by-step reproduction instructions

1. Add a Shortcode block.
2. Enable dark mode.
3. Disable dark mode.
4. Observe that the app crash.

Expected behaviour

Switching dark mode on/off shouldn't produce a crash.

Actual behaviour

Switching dark mode on/off should update the styles as expected.

Screenshots or screen recording (optional)

WordPress information

• WordPress version: 16.9
• Gutenberg version: N/A
• Are all plugins except Gutenberg deactivated? N/A
• Are you using a default theme (e.g. Twenty Twenty-One)? N/A

Device information

• Device: iPhone 11
• Operating system: iOS 14.2
• WordPress app version: 16.9