Observed in Chrome and Safari.
@veronika Today while I was testing PT-3649 I observed this bug in PhenoTips 1.3.6 only ( PC was on 1.3.6 when I originally reported it). It is quite possible that this anomaly was fixed in 1.3.7.
1.3.7 and 1.4M3 does not seem to have it. I can either send you data folder so you can see it in 1.3.6 or reproduce it tomorrow on my local machine.
Issue reopened as I was able to reproduce it in 1.3.7.