When I want to type a text (a username, a password, a URL in the ) I tap on the caption. Then the virtual keyboard is popped up and I start to type the text... but after some keystrokes the virtual keyboard pulls down (is undeployed) and cannot type on. If I tap again on the text caption, the virtual keyboard either does not pop up or pops up late and repeats this behaviour I'm describing. When the text caption is the firefox address bar, the virtual keyboard pulls down and firefox tries to access the incomplete typed URL as I would tapped the "Go" button -- As an incomplete URL is provided, a "page not found" error message is reported the most times. I found this issue in firefox as well as in palemoon (but not in Chrome). Thanx in advance P.D: My smartphone is a Motorola G 4G (Android 4.4.4 kitkat)