<!--more--> tag on same line as content prevents any edits to that line

[archon810]

Hi,

We have noticed a bug in WordPress that prevents any edits to the line with a <!--more--> tag if the tag is on the same line at the end, like so:

Test. <!--more-->

Test2

If you enter this into Text mode, then switch to Visual mode and move the cursor right after "Test." you won't be able to insert any characters.

I tested this on 5.1 and 5.2.

[archon810]

Hi,

Any updates on triaging this ticket?

Our writers are complaining that the read more tag inserts on the same line all the time and prevents edits as described.

Thanks.

[birgire]

Thanks for the report @archon810

Are you using any plugins, like the Classical Editor, since you mentioned Visual & Text mode?

Are there any Javascript errors in the console?

I was unsuccessful replicating this in the classical editor, in WordPress 5.2 with the Classical Editor plugin activated.

[archon810]

Hi,

We do have the Classic Editor plugin active. I can confirm no errors in the console.

Disabling plugins on a dockerized spin-up currently, let's see if it's any of them.

[archon810]

Hi again,

I've deactivated every plugin except for Classic Editor. I also switched our theme to twentynineteen.

I can still reproduce the issue (in Chrome stable 74 on Windows 10 at least). For example, I can't press "space" at the end of the line after "Wi-Fi settings.":

[archon810]

In fact, this is happening in the block editor too, with the Classic Editor disabled.

Here's a screencast demo - note that you only can't add spaces at the end there - other chars work OK.

​https://i.imgur.com/ZpWTzY9.gifv

@birgire I hope you can reproduce this now.

[birgire]

Thank you for the screencast and screenshots @archon810

It was helpful.

I can now confirm the error on my vanilla 5.2 install when I create a new post in the block editor, with the example in more-code.jpg​

No Javascript error in console.

Space is not working just after "after" and right before "before" in more-classical.jpg​

[birgire]

@archon810

I wonder if you could verify another strange thing

• In more-classical.jpg​ I change after to a          fter with few spaces.

• Then I delete only the a character with the backspace button, so that the cursor is now at the beginning of the line (left).

• Then I press the space button few times and it will act like the delete button on the spaces to the right, until it hits f without deleting it.

[archon810]

@birgire I can confirm seeing the same thing. Nice spot - this bug is even weirder. Can we get someone to take a look at what's causing it?

[pento]

I'm unable to reproduce this issue in trunk: are you able to reproduce it there?

[archon810]

@pento Just tested on github master (​http://develop.svn.wordpress.org/trunk/src/ is missing wp-includes/js and is all sorts of broken for me), and I can still reproduce this issue.