Purchasing Windows Disappear

Purchasing Windows Disappear

Within the purchasing area a window pops up when you try to change a purchase orders status (i.e. to invoice recieved) a window will appear and before you can type in it, it will disappear, or it will even after you have typed in it, but have not saved the changes. This is extremely frustrating because it requires multiple entry. This does this on every option that pops up a window in this section. Can you please fix this?

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