Huge bug making me disapearing in other people screen after 2 huge lags

[Shut]

Time: 15/02/2017 around 23h00 GMT+1
Frequency: once
World name: Lich
Character name: Shut H'ell
Class/Level: MNK lvl 60
Party or solo:Party
Area and coordinates: Dravanian foreland around 28x 26y

Step 1: I had 2 huge lags (but i didn't dc), while i couldn't send packets to the server but i could receive them, which mean i saw everyone else moving as usual while i had no action on what was happening ingame.
After those 2 lags, everything was working fine for me, however, everyone else couldn't see me moving, they could see me using skills etc... (I was playing Monk) but for them i was hitting mobs that were milles away from me.Technically, I became a ranged Monk for a moment.

Step2: for me, I was to mobs and everything was looking as usual, only other people were seeing me standing still at the same spot. In case of mobs, they were attacking me (The me on my screen, not the unmoving me on other peoples' screen.
Hope you'll find a way to fix it, it could become a huge exploit especially in pvp, thank you

Connection Specs
- Type of internet connection/provider: ADSL/Bouygues Télécom
- Modem maker/model number: BBOX/F@st3965b

Specs:
Processor: Intel iCore i7-4790k CPU 4GHZ
RAM: 16Go
OS: Windows 10 64 bits
GPU: Nvidia GeForce 970 Strix

[Culfinrandir]

I had that recently for the first time at Rathefrost. I tried attacking the plasma ball things but nothing happened. I assumed that I'd forgotten they were invincible. Waited maybe 30s where I could use actions & stuff but without effects. Suddenly it all caught up & dead plasma everywhere. I think it's what gets referred to as rubber-banding. Normally I would disconnect with a 90k rather than this happen. It was very disconcerting.