It's just a single data point, but I tried Paragon's ext4 driver (the paid version) for Mac many years ago. It seemed to work, but when the drive was connected back to Linux, there were all kinds of fsck errors. Immediately deleted it.
This has also been my exact experience. I used Paragon's NTFS driver (paid) for Mac for my external SSD. After using, when plugging into Windows it would always find "errors" and recommend to Scan and Fix them.
