Recently I have some problems with one payment in my paypal its not that much only 20$ and paypal have already removed the money in my paypal but it still shows open issues and claims. I would like to asked if I can still withdraw money from it . I have done some transactions like sending payment and it was ok but I wonder if I can withdraw some money to it into my bank account eventhough such issues are still in the processed.
You should be able to use your PayPal account without any problem, including withdrawing money. PayPal already has your $20 and if they decide in your favor, you get it back... if they decide in the other persons favor, they get the money but the open case should not affect anything else you want to do.
Paypal will just freeze whatever amount involved in a certain issue. You should have no problem widrawing funds if your current balance is greater that the amount that has an issue.