Bug found in AnotherRSS apps ( Zoom +image option is not working )

Expected behavior

according to my knowledge when i click on the Zoom + image button the image or photo should be zoom in

Actual behavior

when i open the application and open the zoom and scale option then i click on + image it does not work

How to reproduce

• download the open the application
• click on 3 vertical dots
• select the Zoom and scale option
• then click on +image button
• note bug
• Browser: AnotherRSS Current Version 2.15
• Operating system: android version 4.4.2
• smart phone GALAXY Note 3

Recording Of The Bug