Yes polyester can melt in the dryer when you have the dryer on the high heat setting.
If you need to dry polyester it's best to either hang the polyester out on a clothesline to dry or place the polyester in the dryer on the cool setting.
Having the dryer on the high heat setting when you're drying the polyester will cause it to melt easily.
So just make sure if you do dry the polyester in the dryer that you have the dryer set on the cool setting to avoid melting the polyester.
I have melted some polyester before in the dryer because I had the dryer on the high heat setting and forgot to change the setting.
Now I just try to dry the polyester out on a clothesline to avoid possibly melting it.