Setting indexed properties exposed by COM result in error for strict mode.

[pontusn]

TypeError: 'set' on proxy: trap returned falsish for property

[champnic]

Can you add some details about what you are doing here? Could you share some code and where the error is happening? Thanks!

[pontusn]

I will try to provide more details. The problem was seen when setting indexed properties using sync proxy objects from injected JavaScript in response to onclick. The same properties was successfully set from the console.

Our environment is quite complex. I will try to find time to reproduce separately.

[champnic]

Even if not a repro, if you could share the code around where the error happens that would be helpful.

[pontusn]

I think this issue is highly related to #567

[pontusn]

Failed to repro in new project until I happened use propputref...