I'm having a problem with editing features within a file geodatabase. After drawing a feature and saving it, the feature will disappear from the data frame and the attribute table simultaneously. If I restart ArcMap, the feature might reappear, but most of the time I get a fatal error that the data can no longer be loaded from the data source.
This error occurs on all feature types and first appeared in 10.5.1 but has persisted across a clean install of 10.6.1. It occurs within populated geodatabases as well as within completely empty ones (as seen in the images).
The geodatabase was built by a GIS committee in my organization and has numerous domains and attributes, so building a new one from scratch by myself is impractical. Instead, I have made several attempts at creating a new geodatabase by exporting/importing the features, exporting/importing the schema to/from an XML workspace, and simply copying/pasting the empty geodatabase template. I've also tried deleting and re-adding spatial indices.
I've scoured the Web for answers or clues and have come up with very little. This question has been asked here on Stack Exchange but no one gave an answer. I've brought this issue to the attention of the GIS listserve I belong to at work, but again, nobody had an answer.
UPDATE: I've pinpointed where the error initially occurs and it seems to be after I project the feature datasets into a coordinate system that differs from 1) the coordinate system of the original GDB and 2) the points data collected in the field that I use as guides for drawing polygons. Is there a workaround for this?