Webutil_file_transfer consuming a lot of memory and doesn't release...

I'm facing a problem with webutil_file_transfer.client_to_as_with_progress when I'm transferring many files from the client to the server. Suddenly webutil stops the transferring and webutil doesn't work until I've restarted the form.
I've noticed that the frmweb.exe process is increasing it's memory usage while traferring the files. When it reaches about 90-100mb memory in use - webutil "explodes".
It looks like webutil doesn't relase the ressources after the file has been transferred to the server.

I've found a workaround to this "bug".
Instead of calling webutil_file_transfer..... directly in the code - I open a new form with call_form, activates a timer in the when_new_form_instance trigger - which makes the call to webutil_file_transfer - and then closes the form.
Now webutil is releasing the ressources, because the form which made the webutil-call i closed after each call.

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