I have Windows 10 in my work pc and installed firefox quantum however the browser window does not act properly like other OS windows, the following issues I've noticed. 1. I cannot grab the window from the top bar to drag into another screen or move around when fully maximized 2. If I not fully maximize the windows I do not get the arrow to adjust it from the borders. 3. Sometimes If i fully maximize the minimize and maximize buttons disappear. 3. Sometimes if I minimize it I cannot maximize it back ever I have to kill the browser. I have removed all my extensions and customizations from the browser. Tested in private window mode with same results. Checked the prevent accessibility services from accessing your browser and nothing changed.