Renaming a picture creates a duplicate copy that is visible when viewed in the phone's default picture gallery

Expected behavior

Renaming an image should be a function that gives the picture a new name not a function that creates duplicate copies of the said picture.

Actual behavior

Pictures when renamed become duplicated when they are viewed in the phone's default picture gallery.

How to reproduce

• download the app from fdroid store
• launch app and allow permissions if prompted
• Select a picture folder
• Hold and select a picture file
• Click on the pencil icon on the top tool bar to edit and rename
• Save and exit the Simple file manager
• Now open the phone's default picture gallery found by going through the menu.
• Open the affected folder and you would see a duplicate copy of the renamed picture.

• Device: TECNO-L8Plus

• Operating system: Android 5.1

• Application: Simple File Manager

• version: 3.3.3

Recording Of The Bug