Error with Outstanding Amount

Hello, All!
Scenario is:

  1. Total Amount is $33.20
  2. Paid Amount (USD) is $34.88
  3. Change Amount is 1.68$
    But that invoice shows status Unpaid. Why?
    Any Ideas for this problem?


#Sale Invoice


#Cash


#Outstanding Amount

Version of ERpnext is:
V11.x.x-develop (fdb7156) (develop)
FF: v11.x.x-develop (6ccd338) (develop)

Thank you.