The issues added to the Problems view by the plugin often seem to get 'stuck'. This image show a series of problems, most of these errors are fixed in the code but still appear in the list.

Note that some of them are marked with c3c and some are not. I use a custom error parsing regular expression for c3 which consistently reports errors.
The errors which are not marked c3c are current in the code and are correctly reported by both. The errors which only report from c3c did exist previously but have been fixed.
Also note that the c3c errors do update correctly sometimes, once every few edits. I can't tell if its time based, related to the number of edits, or something else.
The issues added to the Problems view by the plugin often seem to get 'stuck'. This image show a series of problems, most of these errors are fixed in the code but still appear in the list.

Note that some of them are marked with
c3cand some are not. I use a custom error parsing regular expression for c3 which consistently reports errors.The errors which are not marked
c3care current in the code and are correctly reported by both. The errors which only report fromc3cdid exist previously but have been fixed.Also note that the
c3cerrors do update correctly sometimes, once every few edits. I can't tell if its time based, related to the number of edits, or something else.