Scoping - Bug: Deselected items are selected again [only visually - count is not going up]

For the scoping process we are following such approach:

After selection building blocks, teams we are landing in L1-L6 screen.

We are filtering out all mandatory items [they cannot be deselected and keeping only items non-mandatory items. Then we are selecting L3-Activity level and deselecting everything.

During the deselection some deselected items are shown as selected again [however, count is not going up] and it is highly confusing. It happened for 2 pilot projects for Germany and 1 project for UK.