Firefox Quantum error: TypeError: this._meta.byKey is not a function error

[michael-learns]

Description

I'm getting error:

TypeError: this._meta.byKey is not a function

Expected outcome

No errors

Actual outcome

Page does not render properly

Steps to reproduce

1. Import paper-icon-button element under app-drawer-layout
2. Open the page in Firefox (Quantum) web browser.
3. Open console

Browsers Affected

• [ /] Firefox Quantum

[notwaldorf]

Can you provide a JSBin with repro steps? This for example works fine (identically in Chrome and Quantum FF): http://jsbin.com/yafodup/1/edit?html,output

[michael-learns]

@notwaldorf Here's the jsbin. http://jsbin.com/velovef/edit?html,console,output I'm not sure why but in jsbin it's not showing the error this._meta.byKey is not a function but instead

"error"
"Script error. (line 0)"

I've updated both paper-icon-button and iron-icon elements with bower update.

I'm wondering if the error is instead related to iron-icon element because of that:

This is where I'm directed to when clicking on the error.

[justinmandac]

Hi! I encountered the same issue earlier. @Mikebarson do you have the LastPass extension installed? Disabling it might do the trick. It was found in this related issue that LastPass was the culprit.

[michael-learns]

Thanks! That fixed it for me.