Problem converting "=" character

[Xample]

Hi,
I have issues converting a string containing the equal "=" value back from url to json.
The "=" seems not be to escaped as is, however if the string containing the "=" also contains an ampersand, then it is properly escaped and parsed back. I thought of enabling the wwwFormUrlEncoded property but it did not solve the problem.
Here is a record of the behavior (from the playground):

Screen.Recording.2023-09-06.at.12.19.03.mov

Is this the expected behavior ?

[dmaccormack]

It's a bug in stringify (https://github.com/jsonurl/specification/#28-x-www-form-urlencoded)
Thanks for the report.