Nike Run App Apple Watch - odd distance setting

I enjoy using the NRC Apple Watch app, but there seems to be an annoying bug related to setting the distance target before a run. Initially I could set in an even number of kms or half kms (eg. 5.0, 5.5, 6.0, 6.5 km etc) but now it forces me to use odd values - 4.9, 5.4, 5.9, 6.4 km. I’ve tried switching from km to miles and back, I’ve tried keeping my runs to an exact value (in case it’s working off an average) and restarting the watch - nothing seems to fix. Any help or tips greatly appreciated….