I had found that entries from one author present in previous libraries (Zotero and Mendeley) were not found when I searched in JabRef (“No entries present”). This seems to be an intermittent issue that occurs when I have hundreds of megabytes of swap memory under Ubuntu. I’ve also seen it under Windows. My browser keeps chewing up more and more memory over time. If I don’t keep it open I don’t have this problem in JabRef I have 8GB physical memory and a similar amount of swap under Ubuntu, so it isn’t a hardware issue"
This is a follow up issue, as multiple (likely) separate issues have been reported in the original thread. The original post is here.