Media and Text Block is stretched at the frontend

[evakaneva]

Description

Images from the media and text block show as expected in the preview but are stretched on the frontend.

Step-by-step reproduction instructions

1. Create a media and text block
2. Add image and text
3. Save/publish
4. Open post on the frontend
5. Observe it is stretched

Expected behaviour

I would expect that the frontend looks exactly like the preview.

Actual behaviour

At the frontend, images from the media and text block are stretched.

Screenshots or screen recording (optional)

Code snippet (optional)

WordPress information

• WordPress version: 5.7.1
• Gutenberg version: Version 10.4.1
• Are all plugins except Gutenberg deactivated? Yes
• Are you using a default theme (e.g. Twenty Twenty-One)? Yes, TT1 Blocks

Device information

• Device: Desktop
• Operating system: Big Sur 11.1
• Browser: Chrome Version 90.0.4430.72

[evakaneva]

I noticed it doesn't happen with other themes. So it is a TT1 blocks specific issue. I created WordPress/theme-experiments#259