As I reported here T184856#4426468, {{ and }} inside templates can confuse IABot. I would suggest that IABot should check that the number of {{ and }} inside the reference tag. If they are not equal (see the example), the bot should not save the edit and somehow indicates it to us.

The linked case (search accessdate=28 August 2012 }}):
<ref name="TorontoStar1987">{{cite news|title=Kuwait buys 10 per cent stake in oil giant British Petroleum |url=http://w3.nexis.com/new/docview/getDocForCuiReq?lni=3WJ6-08G0-00RK-C451&csi=8286&oc=00240&perma=true |newspaper=Toronto Star |date=19 November 1987 |accessdate=28 August 2012 }} |deadurl=yes |archiveurl=https://web.archive.org/web/20140222043148/http://w3.nexis.com/new/docview/getDocForCuiReq?lni=3WJ6-08G0-00RK-C451&csi=8286&oc=00240&perma=true |archivedate=22 February 2014 }} [Előfizetés szükséges]</ref>
->
<ref name="TorontoStar1987">{{cite news |title=Kuwait buys 10 per cent stake in oil giant British Petroleum |url=http://w3.nexis.com/new/docview/getDocForCuiReq?lni=3WJ6-08G0-00RK-C451&csi=8286&oc=00240&perma=true |newspaper=Toronto Star |date=19 November 1987 |accessdate=28 August 2012 |archiveurl= |archivedate=2014-02-22 |=http://w3.nexis.com/new/docview/getDocForCuiReq?lni=3WJ6-08G0-00RK-C451&csi=8286&oc=00240&perma=true }} |deadurl=yes |archiveurl= |archivedate=22 February 2014 }} [Előfizetés szükséges]</ref>