Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: https://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: https://flight-manual.atom.io/hacking-atom/sections/debugging/
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Description

Javascript syntax highlighting breaks by using back ticks with innerHTML which then spreads around the file if edited.

Steps to Reproduce

1. Open atom and make a new file (You don't need to save it, but if you do save a .js file)
2. Set the syntax to JavaScript if not already set
3. Paste in this text

class Testing {
	test(ele) {
		this.testingAgain(ele);
	}
	testingAgain(ele) {
		// ele.innerHTML = ``;
	}
}

4. First issue: Un-comment line 6. Notice how the syntax highlighting doesn't show up
5. Second issue Cut all text from the file, then re paste it. Notice how none of the syntax highlighting is working.

Expected behavior:

All syntax highlight should work properly.

Actual behavior:

ele.innerHTML = ``;

Seems to break the syntax highlighting of its own line, but then if you try to edit lines around it, the broken syntax highlighting seems to spread through the rest of the file.
If you open a JS file that already has this line in it, depending on the size of the file will depend on how many lines don't get the syntax highlighting. Its really quite weird.

Reproduces how often:
Every time

Versions

macOS: 10.14.6

Atom: 1.48.0
Electron: 5.0.13
Chrome: 73.0.3683.121
Node: 12.0.0

Additional Information

Video of the syntax highlighting breaking:

Video of the syntax highlighting issue spreading though the file:

(Sorry for the low quality)