I have run into this problem too. Right after I upgraded to Evernote version 126.96.36.19916 on Windows 10 Home edition, version 1903. It appears that clicking on an internal link results in Evernote executing a search, but the search condition includes the tags (or, at least some of them) from the referring note in the search. The upshot is that the link will work, i.e., the referenced note will be displayed properly, BUT only if it (the referenced note) has the same tags as the referring note. This behavior seems like an obvious bug. Has Evernote Support provided a fix yet? I use this feature extensively and am dead in the water until it is fixed. If there is an open support ticket on this, can it be updated to include the fact that it the linking failures appear to be the use of tags and folders.