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Trello custom field suffering from LastPass browser extension autofill


In the past day or so, my LastPass browser plugin has started to autofill the first custom field on the cards of my board with login information. says this can be prevented by the website owner:

Prevent fields from being filled automatically

To prevent LastPass from autofilling certain fields on specific sites or applications that you have control over, you can edit your item(s) to add the 'data-lpignore'=true attribute within those form fields which you do not want to autofill.


Interestingly, when I look at the HTML of the first custom field, it does have the "data-lpignore" class, but its value is set to "data-lpignore" instead of true. Is this perhaps a regression on Trello's side? It doesn't seem like the class value supported by LastPass has changed recently ( suggests the use of true in a 2017 answer).


1 answer

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2 votes
Answer accepted
Felix Atlassian Team Jul 07, 2021

Thanks for the clear report! I'll update our site to make that value "true" for custom fields instead. As far as I can tell it's been like this for a while, possibly forever.

I suspect something changed on the LastPass side where they were previously looking for the attribute existing, and now they're checking the value.

Thanks! There has been a LastPass browser extension update recently (, but I couldn't find a changelog, and its seems closed source.

@Felix, I see that the change has gone live. I can no longer reproduce the problem, so I think the issue is fixed. Thanks for the quick resolution!

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