Automatic List coding error

With TinyMCE Advanced Version 4.6.7 occurs an error in coding while switching between visual and text editor

Step 1) writing in visual editor:

topic 1
topic 2

Step 2) assigning listing to boh lines results in corrct coding in text editor

• topic 1
• topic 2

Step 3) insrting a break and a space in the visual editor after “topic 1”

· topic 1

· topic 2

Step 4) and switching to the text editor gives also a correct code, even so the “<br> ” is deleted:

• topic 1
• topic 2

Step 5) but switching afterwards back to the visual code results in a weard coding:

<li style=”list-style-type: none”>

• topic 1

• topic 2

These works always like this with the mentioned steps above.