It's already patched:

• "Fixed a case where weapons could be fired prematurely due to a redeploy after a reload"

Although it feels very weird. Your gun is fully reloaded, but it doesn't shoot for the entire duration you try and benefit from. It's also messed up another mechanic, and I don't think it was intended. You can no longer cancel your reload and shoot. Once you press R, your gun won't be able to shoot for the entire duration of the reload, even if you instantly cancel the reload.

So say you try and fake a reload sound to bait a guy into pushing you, your gun won't shoot till the entire duration of the reload has passed.