1. A one-sentence summary of bug: 
When coming back from the nether on skyblock an invisible piglin attacks me. Its not a potion effect because i can not attack this mob when im being damaged and no potion particles to be seen.
2. Priority to fix? {High, Medium, Low}
High
3. Which server? {Spawn, Redwood, Cypress, Maple, Willow, Expanse, DungeonRun, Rush, Creative}
Skyblock
4. Steps to Reproduce: Please list the step-by-step methods to reproduce the issue
Travel through nether portal after attacking piglins for gold farming and when i come back i get attacked near the welcome sign.
5. Expected Outcome: What did you expect to happen?
To live xD
6. Actual Outcome: What happened instead?
Was slayed by piglin several times
7. Proposed Fix (Optional): Do you have a suggestion?

8. Notes (Optional): Anything else we should keep in mind in relation to this issue?
This has happened more than 4 times. Tried any fixes i could but does not seem to do anything
9. Screenshots (Preferred): Do you have screenshots of the problem, proof or reference?