View online from DOI spawns lots of tabs in firefox
View online from DOI spawn many tabs when trying to access the page of the article through the right pane, spawning of several tabs at once in Firefox puts a lot of stress on firefox leading to freezing up of the whole system, will be glad if you can look into this, the solution available is to copy the DOI link and paste it into Firefox to avoid spawning several tabs at once.
Clicking on the DOI label works though.
That is, If I open Zotero freshly, and view online DOI-A, only DOI-A will be opened (one tab). Then I close the DOI-A tab in my browser, and view online DOI-B, both DOI-A and DOI-B will be opened (two tabs). So on and so forth. Seems like some kind of cache issue, and the cache will be reset when Zotero is closed and reopened.
Clicking on the DOI label won't open all previous tabs, but it will go into that cache.
re your questions, it is a behaviour for all DOIs, there is a mixture of adding by doi and ris import, I have several common add-ons, disabling them all does not solve the issue.