Hi Joshua,
Thank you for your patience,
We have tried to replicate the memory leak problem using PdfTiffimage, but we regret to let you know, we were unable to reproduce the memory leak problem on your end. It works properly without any memory leak.
We have found the image instance is not disposed of for PdfTiffimage. We have already Dispose() method for PdfBitmap and we have planned to expose a similar API in PdfTiffImage to dispose of the image objects.
We will include the API changes in our upcoming weekly NuGet release and which is expected to be published on October 12th, 2021.
Please let us know if you need a patch for any other main release version. We will create a patch for the same and update you.
Please use the below feedback link to track the status of the reported bug.
Regards,
Gowthamraj K