To reproduce the issue use Sales Transaction Entry as example
1. login Dynamics GP in a browser(IE,Chrome,whatever browser)
2. open an existing invoice in Sales Transaction Entry
3. mouse right click on non-field area in the scroll window ( when mouse cursor shows as arrow)
4. then move mouse to any field (for example, Item number), right click again
At that time Web Client page shows loading and is freezing. What you can do right now is to reload page by click refresh icon on the browser
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