Tim Nguyen :ntim Reporter
	Description • 6 years ago

STR:
- Have highlights disabled
- Visit a super long data URI
- Enable Highlights
- Open the new tab page

AR:
- Firefox freezes
- The super long data URI appears on the new tab page

ER:
- Highlights should be smart and ignore the super long URL for performance concerns

	Tim Nguyen :ntim Reporter
	Comment 1 • 6 years ago

Here's the data URI (was too large to put in a comment).

	Tim Spurway [:tspurway]
	Comment 2 • 6 years ago

Setting this as a P3 and fix-optional for this release unless there are strong objections.  Thoughts :ntim

	Ricky Rosario [:rrosario, :r1cky]
	Comment 3 • 6 years ago

Another way to trigger this is to execute the following in the developer toolbar:

>> screenshot --fullpage


That pretty much makes the newtab page unusable for me until I clear my downloads.

	Ricky Rosario [:rrosario, :r1cky]
	Comment 4 • 6 years ago

Highlights after a screenshot from Developer Toolbar.

	:Felipe Gomes (needinfo for replies!)
	Comment 5 • 6 years ago

Not a common case, but when it happens, it apparently makes the new tab unusable. To fix it or could just not show data: URIs at all, or establish a length limit to crop

	Ricky Rosario [:rrosario, :r1cky]
	Comment 6 • 6 years ago

The UI issue in Comment 4 was fixed by Bug 1464349.