Randomly creates ghost lines when using IME input.

[linjie0928]

When I input Chinese IME, the program randomly creates line breaks, and the generated blank lines cannot be deleted.
This only happens when used inside Angular, and it will not happen when imported directly into HTML.

in action video:
https://github.com/KillerCodeMonkey/ngx-quill/assets/44791594/d51f16ae-4ec4-4f0e-9d2b-d85125975182

[linjie0928]

I found the exact sequence to trigger it.

1. Entering a letter into an IME
2. Delete key
3. Enter key
   ghost line will apear.

2024-03-21.5.52.07.mov

[KillerCodeMonkey]

can you please check this if this appears in native quilljs editor as well?

because i am not doing special. it should be a quilljs issue.
Please check quill v1 and v2 release candidate.

[linjie0928]

This problem does not occur in native quilljs, but it does happen if I directly import quill.js into Angular without using ngx-quill.

[KillerCodeMonkey]

but then there is nothing i can do. because i have no special handling in there that could produce this.

Which quill version do you use?

[linjie0928]

In your example, you can reproduce the same situation:
https://killercodemonkey.github.io/ngx-quill-example/
I recorded the screen in your example.

My quill version is ^2.0.0-rc.3

[KillerCodeMonkey]

strange. but i have no glue why this should happen.
i just go with the quilljs api to insert content and do not touch the real content/user input. just connecting it with angular inputs/outputs.

so if you have an idea. let me know

[luin]

I didn't reproduce it actually: https://share.slab.com/1y3BXNSs

Also not sure why in your screencast, the placeholder presented when the caret is at the second line: https://share.slab.com/8hP0ZlY2.

[linjie0928]

The strange caret position is the ghost line i talking about. XD
I can only delete it by selecting and typing other text over it.
It will only happen to the first letter of a line, but it will not happen in the text.

Maybe it’s because Taiwan’s phonetic 注音輸入法 IME is rather special....
I will encounter the same situation on safari.
Or it's a OS problem. My OS is Sonoma 14.3

action detail video
https://github.com/KillerCodeMonkey/ngx-quill/assets/44791594/32bfd67e-a0e5-4d11-b639-fe5fa48c7608

[linjie0928]

I have been looking for the problem for a long time. The difference I have found so far is that if I run Quill directly in index.html, there is no problem. But once I move it to the component and leave the IME, the ghost line will appear.

[KillerCodeMonkey]

since then it is a general problem angular + quill + ime and is not related to this package here.

It would be nice that this issue moves then somewhere it really belongs to :D

[linjie0928]

I'm wondering how best to address this issue that's been significantly hindering the development of my project. I've attempted to raise it on the quill.js side, but it's been closed by @luin without much follow-up. Would it be appropriate to escalate this matter to the Angular team?"

[linjie0928]

I temporarily fixed the issue; we need to unpatch compositionend event from zone.js.

@KillerCodeMonkey

[KillerCodeMonkey]

But Do you know What other Effects That will have.

Because changing default angular/zone.js behavior is maybe not the Best idea.

Maybe it is working now with your issue but Produces some more for others

[KillerCodeMonkey]

So i will add section for known issues and add there some hints about deactivating zonejs event on own risk.

[KillerCodeMonkey]

I added the section https://github.com/KillerCodeMonkey/ngx-quill?tab=readme-ov-file#known-issues

[KillerCodeMonkey]

I will close this because i will not globally unpatch events to avoid unexpected sideeffects in other apps