Thanks for the report.
What you are describing is likely the effect of "ghost stabbing" upon respawning. This has a very small chance of happening and we're still investigating its cause (it's not tied to your posted exploit) - it is much more likely to be tied to a rare issue causing a delayed update of your character's position upon spawning in, causing your character to be appearing as standing still, seemingly afk, at your corpse position for up to 10 or 20 seconds, which then enables enemies to stab "you", causing you to die in your spawn area. This matches with reports of players of being "ghost stabbed" on respawn after they've performed a melee charge (which would put their corpse position in close proximity to the enemies).
- Trusty