Fix error messages can't be copied

[WiXSL]

Fixes #6749

Before;

After:

[fzaninotto]

Not fan of the design.

Here is an alternative suggestion: the AccordionSummary has a fixed title (like "Error Stack") in your PR, and the AccordionDetails contains both the error (in bold) and the error stack.

It should make it copyable, no?

[WiXSL]

Not fan of the design.

Here is an alternative suggestion: the AccordionSummary has a fixed title (like "Error Stack") in your PR, and the AccordionDetails contains both the error (in bold) and the error stack.

It should make it copyable, no?

The thing with this idea is that you are showing an error and there is no actual error to display, until the user interacts with it.

[WiXSL]

The other option is to add css user-select : 'all' to the summary to solve the problem.

[fzaninotto]

I prefer that solution!

Note that we've adopted another solution in next (see 19d7a69), but I think your solution is better and should be backported.