Alacritty Ranger w3m: Images are not showing or disappear after few seconds

I am using Alacritty and ranger. I have also installed w3m. This is part of my ~/.config/ranger/rc.conf:

set preview_images true
set preview_images_method w3m
set w3m_offset 0

Most of the time images do not show at all. Just black space. And if they show up they disappear after 2 or 3 seconds. When I set set preview_images_method terminology, it looks like this: The versions I use: - ranger 1.9.3 - Python 3.9.1 - w3m/0.5.3+git20200507 What should I do to be able to preview images in ranger ? Thank you for help