I think the teleporting blue? image is not disappear when teleported, even I disabled the ability.

Which image? I can't understand...

It's 10.13.4.1558-1.7.10

While player holding a teleporting skill, it creates a blue human shape image particle in front of the player, right? And once released and teleported, the blue human shape particle is still remain.

Amazing. I have never seen such phenomenon.
Could you tell me your version of forge?

Well....Normal if occasionally.
Or please provide more information to help us...

It's not crashing my game, so I don't know what am I going to provide here, but if the picture can say more than word, here are some of them...

^ During ability activation

^ About to use skill which is teleportation

^ After teleported, the "blue human shape image particle" is still remain

^ Even I have deactivated the ability activation, the "blue human shape image particle" is still there

^ Just another view angle

^ This is my mod list

Fixed.

I am currently experiencing this in AC v1.0.6. It didn't happen at first, and to the best of my recollection, I first noticed it after I had spammed Mark Teleport. Let me know if I can provide any other information that could help with solving this.

It will happen if the cooldown is 0 tick, so there is nothing to do but wait for a new version :(

Understood. Thanks for responding so quickly.

Haven't seen this one, so please ignore the pull request from me, if the bug is known.
I wish I could fix this myself, but I am not able to build the mod myself with my fix (preventing the 0 cooldown by changing ctx.setCooldown(lerpf(30, 0, exp).toInt to ctx.setCooldown(lerpf(30, 1, exp).toInt).
I'm getting the following two errors when I try to build:

AcademyCraft.git\build\sources\scala\cn\academy\core\client\ui\TechUI.scala:222: class ContainerUI needs to be abstract, since method drawGuiContainerBackgroundLayer in class GuiContainer of type (x$1: Float, x$2: Int, x$3: Int)Unit is not defined
class ContainerUI(container: Container, pages: Page*) extends CGuiScreenContainer(container)

AcademyCraft.git\build\sources\scala\cn\academy\vanilla\electromaster\skill\MineDetect.scala:122: class HandlerEntity needs to be abstract, since method entityInit in class Entity of type ()Unit is not defined
class HandlerEntity(_target: EntityPlayer, _time: Int, _range: Double, _advanced: Boolean) extends EntityAdvanced(_target.worldObj)

Don't know what to do here since I'm not a Java developer :-/