Fill example overwrites all other examples

[gmeister2]

The 'fill example' action can overwrite all other examples.

version: 9.3.2

Procedure to reproduce:

• open docs (with render-style: focused)
• click on endpoint
• click on button 'clear'
• click on button 'fill example' -> example textarea shows correct data
• click on any other endpoint -> all other example textareas show the data that was created with the first 'fill example' action

[mrin9]

fixed by 21746a7