Instant Effects Such as Instant Damage and Instant Healing cannot that are from splash, lingering and tipped arrow cannot be cleared by these commands
/effect <target> clear
/effect <target> <effect> 0
the the instant effect can be cleared if from effect command or bottle potion
Steps to Reproduce
1. Give yourself repeating command blocks
2. Type one or two of these commands above (For "effect <target> <effect> 0" type like this "effect <target> (instant effects) 0"
3. Activate the command block
4. Throw the splash/lingering of instant effect to yourself
5. For Arrow, shoot yourself
Expected Result
-The Effects cleared/removed by command block
Observed Result
-The effect can't be cleared/removed
Linked issues
is duplicated by 1
Attachments
Comments 3

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Thank you for your report!
However, this issue is Invalid.
You have posted a feature request or a suggestion. This site is for bug reports only.
For suggestions, please visit Minecraft Suggestions on Reddit or visit the Feedback website.
Quick Links:
📓 Bug Tracker Guidelines – 📧 Mojang Support – 📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki