Elytra suddenly not working when lagging

Description:

When lagging a little on server (I have a bad connection) while flying with elytra, sometimes I just 'stop flying' in mid air, can't re-open my elytras and can't use fireworks

Since it's a server without natural regeneration, a good proportions of my deaths are caused by this bug...

steps to reproduce:

I don't know, sometimes it happens when I lag even just a little, and sometimes when I'm lagging a lot it doesn't happens...