Poor Browser skills in DaVinci

Can you help me understand why:
1. We can see no color line for used parts of clip on timeline inside Filmstrip on Edit page and inside Clip thumbnail on Cut page? (figure 1)
2. Clip in Thumbnail View on Edit page has no Filmstrip? (figure 2)
3. Color of line for used parts of clip on timeline inside thumbnail has the same color like a line color of selected clip? Why can't it be green, for example? (figure 3)
4. Scrubbing without push the mouse button inside thumbnail it is not gang with left preview window on Edit page?
5. List View has no Thumbnail column so we can see thumbnails in List Views too?
Thanks!
1. We can see no color line for used parts of clip on timeline inside Filmstrip on Edit page and inside Clip thumbnail on Cut page? (figure 1)
2. Clip in Thumbnail View on Edit page has no Filmstrip? (figure 2)
3. Color of line for used parts of clip on timeline inside thumbnail has the same color like a line color of selected clip? Why can't it be green, for example? (figure 3)
4. Scrubbing without push the mouse button inside thumbnail it is not gang with left preview window on Edit page?
5. List View has no Thumbnail column so we can see thumbnails in List Views too?
Thanks!