When I have opened a product in SNAP, viewed a band, and then closed the product, SNAP will sometimes not release the files, so I cannot then delete them from my disk without closing SNAP.
Process (Does not occur every time I do this)
Open product that is in BEAM-DIMAP format > Open a band in the product > Right click and close product > navigate to product directory -> Delete product data director -> Get warning that bandName.img cannot be delete because it is in open in snap64.exe.
OS: Windows 10 x64
RAM: 16GB, configured to use 9GB
Example Image (with about page)