Problems with scrolling on the fitness tab

[blazma]

I have noticed several issues with scrolling the list of features on the fitness tab, when the number of features is higher than what would fit the boundaries of the list, making scrolling necessary.

1. If we move feature by feature and select them this way, then after selecting the lowermost feature still visible, the program automatically scrolls a little bit so that we can select the next (previously invisible) item on the list. However, when we click that feature automatically scrolled into sight, it won't be selected, and neither will any consequent items if we keep using this auto-scroll. A workaround is clicking these items a second time.

2. If we use the scrollbar to manually scroll through multiple items, then the item selected just before clicking on the scrollbar will not get selected as we let go of the scrollbar. We have to go back and select this item again.