I've a installed a virtualbox under windows 10 and installed a Ubuntu 18.04 as Virtual Server and everything is running fine. now i'm connecting to this server via windows computer using rdp which is also running fine. but... when i run an application written in java (developed in netbeans 8.2 under windows 10 )which is using GUI as user interface I get the following problem: 1. The Font is not the right one. 2. Some components background colors are not displayed. 3. Some components are even mixed with each others JTextField and jLable.
any exmplantion why is this happening?