How do I disable this feature?

[virginityrocks]

I find this feature not useful for what I need. How do I disable it? It makes text difficult to select.

[adzenith]

What feature? Your picture tells me nothing.

[virginityrocks]

The feature that highlights text in grey and makes it impossible to select individual letters within in unless you click on it like 5 times.

[tito]

Seems fixed in ST3