Graph issue on Zabbix 6

[saman_s1]

Just for notify !

Dear all,
I have an issue changing "draw style" on a web monitoring graphs.
when I change "Draw style" to "DOT" and click on "update", it will change to "Line" again, I check a similar graph on Zabbix-6 and Zabbix-5.4 both on Ubuntu Server 20.04 LTS, this feature works fine on Zabbix-5.4 but on Zabbix-6 after update it will change to Line again.

[gilljr]

I also have this issue no matter the "draw style" chosen. The graphs are always saved as "Line."
Had no issue prior to version 6.

ver 6.0.2-1 from Zabbix Repo
Centos 8/Rocky Linux