I am using the web uploader to add photos taken using an iphone. Most of the time, the location is added automatically from the photo metadata without problem. However, I have now several times noticed an observation with a flipped longitude.
In the following case, the correct longitude is 35.875 degrees West, or -35.875 (in Brazil). However, the photo is being imported as if it were 35.875 degrees East (in Tanzania), i.e. missing the minus sign. When I edit the longitude to include the minus sign, the observation is plotted once more in the correct location.
I have not noticed a pattern as to which observations are suffering this problem. It’s not happening with most of them! I haven’t seen the equivalent happen with latitude yet.
EDIT: the location is shown correctly on the iphone, but the minus sign is missing in the file transferred to my computer. Therefore, I believe this is a problem that’s occurring outside of iNaturalist, during the transfer from iphone to computer.