Below (screenshot 1), I selected both the group (in category Sports classes) and an item in this group (marked GROUPED TRANSACTION). Note how the total 706.10… which is not even 440.81+265 = 705.81 but close (no idea where that value comes from). The Filtered Total tooltip (screenshot 2) indicates that it's properly removing redundant grouped items, but it's not doing that. In fact, I have no idea where the 492.01€ comes from. I hope that at least the budget is correct as it should only take into account the parent group's category, since grouped items don't even have their own category anymore… but considering all the sum errors, I can't be sure. In addition, right after grouping items (with some text filter active), the selection is very buggy, as selecting unrelated, non-group items will also select grouped and group items. For instance, selecting the Restaurant item below will also select the two items above. Even after clearing filter and looking at all, non-grouped transactions, click on the restaurant item would select unrelated items below (screenshot 3). I cannot repro the bad selection after refresh though. Maybe that bug only occurs just after grouping items, as it retains an old selection in the background.