MedCat Trainer stops snapping to next annotation in window, (Very long document)

v2.5.3

Document no longer moves to annotation location after several annotations down in a long document. This is when pressing right arrow key or the mouse button on the >> arrow. The summary annotated text shows the selected annotation changing though the summary information except for the text is empty.

is this still happening in the later 2.5.5 patch release?

update:

Cloning the project and using the remaining documents again starts to have strange behaviour such as concepts no longer being annotated at all upon moving to a new document.

Taking the remaining un-annotated documents, creating a new project and uploading them. Then starting to annotate again appears to remove the problem. Perhaps the problem is related to the number of documents that have been annotated in a project already?

*This happened again at about 100 documents into the project.

This occurred using the patch released today which I believe is 2.5.5.