Copy and Pasting File Size Always Prints 'Calculating' not Size Values

Expected Behavior

Copying and Pasting the Size from a File's Properties window should result in the values of the size of the file being printed.

Actual Behavior

Copying and Pasting the Size from a File's Properties window results in the word 'calculating' being printed rather than the values representing the size of the file.

How to Reproduce

1. Launch Amaze File Manager 3.2.1 on Android 8.1.0
2. Click the 3 Vertical Dots icon to the right of a File
3. Select 'Properties'
4. Select and Hold on 'Size' until a message appears confirming copy
5. Paste the clipboard into any text editor

Device: Pixel 2 XL
OS: Android 8.1.0
App Version: 3.2.1

Recording of the Bug