How to setup the new qubes 4.3

first question
in qubes 4.2 at sys-whonix → Tor User Config (Torrc) needed to add the “ConnectionPadding 1” text. In the qubes 4.3 i cant do the same. why? is that now not important?

second question
I wanted to make stream isolation in the 4.3 same as the 4.2 but it can’t possible. Why? How can i fix that in 4.3?

third question
where can i find a doc about the 4.3?

Where did you get the information that this was important to set?

In the qubes 4.3 i cant do the same

More information would be nice. What does “I can’t do the same” mean? What error are you getting?

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Might help.

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about stream isolation:

if i click on the USER FIREWALL SETTINGS in the sys-whonix, then happen nothing.

about connection padding: