Group by Author doesn't work as expected

[dyako-baram]

Steps to reproduce

in the library group the items by Authors

Expected behavior

if an author had 2 titles and both had different casing for the Author name they wont be grouped together
for example:
Title A by Author John doe
Title B by Author john doe
those 2 titles wont be grouped since the author's name has different casing

Actual behavior

both titles A and B should be under John doe (either the J is lower cased or uppercased)

Crash logs

No response

TachiyomiJ2K version

1.7.4

Android version

Android 9

Device

samsung galaxy s8

Other details

No response

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• I have written a short but informative title.
• If this is an issue with an extension, I should be opening an issue in the extensions repository.
• I am reporting an issue exclusive to this fork. I have also checked that is not an issue on the main version of Tachiyomi
• I have tried the troubleshooting guide.
• I have updated the app to version 1.7.4.
• I have updated all installed extensions.
• I have admitted that I am a clown by having checked this box, as I have not read these acknowledgements.
• I have filled out all of the requested information in this form.