Hi!

Why when i run java desktop app with SWING GUI on jre 1.7 (OS Tiny Core 5) it's works perfectly, when i run it's app on jre 1.8 (OS Windows or Tiny Core 3) it's works perfectly, but when i run it's app on jre 1.8 (OS Tiny Core 5) all what i see on the screen is grey rect. In logs no exceptions.

Help me please! I have no more ideas how to fix it.