1.11 - YAML parameters get reformatted on environment change

Issue: When going into a single host that has parameter overrides and
selecting another Environment and then go back to the parameters tab, any
parameters that had host level overrides have been reformatted and the page
will no longer save because they're invalid parameters.

Ex.

Parameter - firewall rules
Starts with:

020 accept tcp snmp requests:
action: accept
port: '161'
proto: tcp
021 accept udp snmp requests:
action: accept
port: '161'
proto: udp
024 accept 8080 tcp requests:
action: accept
port: '8080'
proto: tcp

Once selecting another environment and clicking back into the parameters
tab, it's been changed to:

— "020 accept tcp snmp requests:\r\n action: accept\r\n port: '161'\r\n
proto:
tcp\r\n021 accept udp snmp requests:\r\n action: accept\r\n port:
'161'\r\n proto:
udp\r\n024 accept 8080 tcp requests:\r\n action: accept\r\n port:
'8080'\r\n proto:
tcp\r\n"

So far I've noticed this on 1.11.1 and 1.11.3 on two different servers.

Any ideas?

Thanks.