You should allow the pasting of passwords throughout your product, especially where you are importing data from your banks/brokerages. There is a common misconception that this is enhances security of your product, however, there is no evidence to back this up. In fact, there is a NIST Digital Identity guideline from 2017 that encourages copy/paste of passwords in conjunction with long/complex passwords. https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-63b.pdf
I hope you take this into consideration for your next version. A patch to the 2019 version would be really appreciated.
