Hi friend I had the same problem and I am going to speak about my own experience, this symbols only get there when the notification don't have a exact period of time, like the music player which you can stop it when you want. The only solution I have found is to install the Xposed module "Meizu Notification Mix"

And after installing the suggested file it is not coming on your phone,right?

If possible could you please upload the file so that I can download it.it would be highly appreciated.   

It is not a file, as I said you need to install Xposed and you need to be root

it is a notification type

LIKE something is uploaded to G DRIVE you can see this.

check some online uploads selected ONLINE default or you or slow connection of data may always shows ON

Some online process is not totally completing so that it is appearing
try to check every app.

Thanks a lot guys for the suggestion but I got the solution and I assure all if you to check for this solution

first go to  settings->apps->running tab-> close all the application one by one and check which app is causing this  infinity icon to come over there. you don't need to install any third party application for this and I believe this solution will be the fix for all the meizu devices. thanks a lot for the cooperation and reading the solution

yeahhh

On Flyme 6 most notifications have their own icons now. Beta coming in March.