Text box font always black

My text box font colours always end up black whatever I do. I highlight the text, Right Click and chose character font colour white but it ends up black!

I have noticed if I double click inside the box the text goes white. If I click outside it rverts to black. Print preview shows black but it prints as white!

I did things a bit differently from shahriyarsabit. I am hoping I followed the same begining steps that you did. Starting from the top:

  1. I opened Libre Office Writer
  2. Started typing.
  3. Highlight (via left mouse click and drag) one word.
  4. Right clicked the word.
  5. Select [Character]->[A Character]
  6. Font Effects Tab.
  7. Font Color Changed from Automatic to White
  8. Pressed [OK].
  9. Noticed how the word went from black to white.

Given the above, I am wondering if I am using a different version of Writer than you or perhaps the steps I included above differ slightly from your steps. Just to make sure it is not the former, here is my version number:
Version: 7.4.7.2 / LibreOffice Community

How well does my comment answer your question?

Maybe it is the software problem. Have you tried by reinstalling the software?
Note: Use the latest version of LibreOffice which should be downloaded from LibreOffice official site.
By the way, you could attach a video recording (GIF format) of your problem which will make it convenient to the experts for suggesting proper solution.

*There are many freeware softwares are available to record screen in gif format.

But this works fine for us!
soffice.bin_QzKDZZvSCU