Tracking filters should allow mixed case

[Tekl]

Describe the bug
I would like to remove tracking struff from LinkedIn links, but it does not work because the App transforms manually added tracking parameters like 'trackEmail' or 'midToken' to its lowercase variants. But the removal seems to be case sensitive.

Steps to reproduce

1. Add 'lipi', 'trackEmail' and 'trk' to the tracking filters.
2. Sync to Safari extension.
3. Open a LinkedIn link like this article: https://de.linkedin.com/comm/pulse/tokens-als-währung-apple-macht-eine-andere-rechnung-auf-zimmermann-qogef?lipi=urn%3Ali%3Apage%3Aemail_email_series_follow_newsletter_02%3BrMBfoZP1Q8CyNG%2FGKd1IlA%3D%3D&midToken=AQFbyblkekS4xA&midSig=1bhLLA3Mp2Xsg1&trk=eml-email_series_follow_newsletter_02-newsletter_content_preview-0-readmore_button_&trkEmail=eml-email_series_follow_newsletter_02-newsletter_content_preview-0-readmore_button_-null-51grm2~mq65rnx2~uz-null-null&eid=51grm2-mq65rnx2-uz

Expected behavior
Only 'lipi' and 'trk' are removed, 'trackEmail' stays in the URL.

Device & OS

• macOS 26.6

[aloth]

Hi, thanks for reporting this — you're right, the parameter matching was case-sensitive when it shouldn't be.

The app was converting custom filters to lowercase when saving them, but the URL matching in the Safari extension was doing an exact (case-sensitive) comparison. So "trackEmail" got stored as "trackemail" and never matched the actual "trackEmail" in LinkedIn URLs.

Fixed for version 4.2.3 — filters will now match regardless of case, and the app will preserve the original casing you enter.