Using the Create Particpant function fails and can't get rid of the error

[dominic-banister-swo]

Describe the bug
If I add the "create particpant" code to a sequence diagram and get an error, I cant' get rid of the error

To Reproduce

1. Copy in the sample documented sequence diagram that includes Create and Destry commands
2. Change "Carl" to anything else. See the error show.
3. Then try to fix the issue

Expected behavior
After the error is corrected the error should disappear

Screenshots
https://github.com/mermaid-js/mermaid-live-editor/assets/24253416/26dac0d1-8d93-48db-b220-25f9c8b30e63

Desktop (please complete the following information):

• OS: [e.g. iOS] Windows
• Browser [e.g. chrome, safari] Chrome
• Version [e.g. 22] Version 116.0.5845.111 (Official Build) (64-bit)

[TonyBrookILSTU]

Took me a bit to find this particular issue. I am having the same issue.

• OS: Windows 11
• Browser: FireFox
• Version: 117.0

At first I thought it was related to uBlock Origin, but it seems like the biggest thing turning that on and off does is clear the cache and fix the issue.

[tokenflow]

Same issue in Mac the error is persistent, require closing and opening the application, by the way same behavior in meramaid editor.
MacOs 12.6.9
Both Firefox and Typora application