After the 14.17 update I noticed that whenever I select an activity (e.g. Strength) and then go back, if I open the Navigation > Data Screens > Screen X settings the options in each data field & the colors are inherited from that activity. So if I select Strength, exit, then view Navigation data screens the colors will be yellow and there are no options for Distance, Cadence etc because this is not available in Strength. If I select the Run activity, go back and view Navigation settings then it's back to normal.