Can’t Tell if This is a Bug or a Feature (Show all Chapters)

[CadmarLegend]

When you click the 'show all chapters' button on the table of contents in the series page, you cannot click it again to hide all the chapters and display the pagination in the table of contents. As mentioned, can’t tell if it’s a bug or a feature.

The button:

 

[georgelee5786]

Same thing happened to me, seems like a bug