Inline script body raw input is not allowed any more in 5.0-rc1

It seems that after the most recent update the text from the text area in a task inline scripting section is processed in some weird way when saved.

Example 1:
The line "net view
server" is saved as an incorrect "new view \server".
The line "new view \\\\server" is saved as a correct "net view
server" but after clicking the save button again without making any changes I am getting "net view \server" again.

Example 2:
The text after the comma is also getting chopped: "echo %DATE:~6,4%" transforms into "echo %DATE:~6" when saved.
Escaping comma with a backslash: "echo %DATE:~6\,4%" - helps the situation but again only until the second save.

Important note:
If you have multiple tasks, when saving one - all the other are re-saved and get spoiled!