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LMR33620: Effects when device is unpowered but EN signal is present

Part Number: LMR33620

Team,

my customer is using LMR33620 in a new application. There is a possible fault condition where the Vin of LMR33620 is not present, but the EN signal (3.3V) is still present.
That means the LMR33620 is unpowered and EN is 3.3V. 

  • Is this allowed?
  • Are there any side effects expected?

They have done current measurements and it seems like there is no increased current going into EN pin.

Thanks