Firefox 67.0 has a breaking change that overrides any variable with name
u2f. This breaks many Vaadin and GWT applications because the minifier quite quickly starts using
u2f as a function or variable name. That’s why we’ve released the following maintenance versions of the platform:
All of them include fixes for Firefox 67.0+:
- Override reserved globals for Firefox 67 #2146.
In order to determine if your application is affected by the problem described above, you need to do the following:
- Open Developer Tools
- Go to the Sources tab
...WidgetSet-0.js(it can have a different name)
- Search for
u2f(see the image below)
u2f is found then update your solutions as soon as possible!
Please note that
u2F are correct names.