The Popup clears the selection mark when selecting text with errors

[fmichaut-diff]

When selecting text in emacs by holding the SHIFT key and moving my cursor around with the ARROW keys, if I step on a word highlighted by flycheck, it will open the popup with the error message, clearing my selection at the same time.

This is particularly infuriating when trying to fix errors reported by flycheck when refactoring code, since selecting the offending piece of code, usually results in stepping on a flycheck error which clears the whole thing.

Steps to reproduce the behavior:

• Open some file with flycheck errors
• Position your cursor before an error
• Hold SHIFT and move your cursor over the error, trying to select the area from before the error, to after the error.
• Observe the selection being cut in the middle when the cursor was on the flycheck error.

I would expect that, when selecting code, the popup should not open, or if it must, it should not clear the selection.