(In reply to sdc.blanco from comment #0)
> Test 1: 
>   1. Place cursor in ”Heading Level 2 – folded”
>   2. Use Navigator, right-click on ”Heading Level 1 – open”, choose ”Delete
> Heading”
> 
> Actual: Dialog box appears, with ”You are trying to delete folded (hidden)
> content.”

Actual result:
- No dialog box appears
- If heading level 2 is folded in navigator, heading level 2 within sublevel (instructions) is deleted
- If heading level 2 is open in navigator, sublevel "instructions" remains.

Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: a4522ef5ce6a625054d83ec907aee07c156e94ed
CPU threads: 4; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win
Locale: en-US (de_DE); UI: en-US
Calc: CL threaded

(In reply to Dieter from comment #1)
Just to be sure. The issue here is outline folding, not whether headings are collapsed or expanded in Navigator. I do not think the issue is affected by whether headings are collapsed or expanded in Navigator.

When I opened the attached document, I noticed that "Heading Level 2 - folded" was not "outline folded".  Make sure it is folded.  Then try the tests.

When "Heading Level 2 - folded" was outline folded, then I reproduced both Test 1 and Test 2, now with a later version.

Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 218a7650a5cf03f895bed19c68d6f02daec536e9
CPU threads: 8; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win

(In reply to sdc.blanco from comment #2)
> When I opened the attached document, I noticed that "Heading Level 2 -
> folded" was not "outline folded".  Make sure it is folded.  Then try the
> tests.

Can you advise how to do it? I followed the instructions from https://help.libreoffice.org/latest/en-US/text/swriter/01/outlinecontent_visibility.html but Ctrl does nothing and there is no Outline Folding item in the context menu for headings in the Navigator.

Arch Linux 64-bit, X11
Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 9eb419b0b0f019f5fbc48ff1a11977e8b041edee
CPU threads: 8; OS: Linux 6.5; UI render: default; VCL: kf5 (cairo+xcb)
Locale: fi-FI (fi_FI.UTF-8); UI: en-US
Calc: threaded
Built on 2 October 2023

I reproduce the three tests in:

Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: e3c961e6a3917d95534652e0f982918cc1079015
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: en-AU (en_AU.UTF-8); UI: en-US
Calc: threaded

Jim, any change you could have a look at these special cases?

(In reply to Buovjaga from comment #3)
> Can you advise how to do it? I followed the instructions from
> https://help.libreoffice.org/latest/en-US/text/swriter/01/
> outlinecontent_visibility.html but Ctrl does nothing and there is no Outline
> Folding item in the context menu for headings in the Navigator.

You don't get the right-hand-side arrow when hovering the titles?
Is this setting on? Tool > Options > LO Writer > View > Show Outline-Folding Buttons

(In reply to Stéphane Guillou (stragu) from comment #4)
> (In reply to Buovjaga from comment #3)
> > Can you advise how to do it? I followed the instructions from
> > https://help.libreoffice.org/latest/en-US/text/swriter/01/
> > outlinecontent_visibility.html but Ctrl does nothing and there is no Outline
> > Folding item in the context menu for headings in the Navigator.
> 
> You don't get the right-hand-side arrow when hovering the titles?
> Is this setting on? Tool > Options > LO Writer > View > Show Outline-Folding
> Buttons

Ok, that was the missing step, I did not have it activated.

(In reply to sdc.blanco from comment #0)
> 
> Test 1: 
>   1. Place cursor in ”Heading Level 2 – folded”
>   2. Use Navigator, right-click on ”Heading Level 1 – open”, choose ”Delete
> Heading”
> 
> Actual: Dialog box appears, with ”You are trying to delete folded (hidden)
> content.”
> Expected: Either heading and text is deleted or request a confirm before
> deleting.
I repro this bug.

> Test 2: 
>   1. Fold outline of ”Heading Level 1”
>   2. Place cursor in Heading Level 2.
>   3. Use Navigator, right-click on ”Heading Level 1 – open”, choose ”Delete
> Heading”
> 
> Actual: Nothing happens.
> Expected: In light of test 1, I now would expect to get the dialog box that
> appeared in test 1.
After I set outline folding not to include sub levels I was able to repro this.
I agree that the dialog box should be shown. 

> Test 3:
> 
>   1.  Use Navigator, right-click on "Heading Level 2 - folded", choose
> "Delete Heading"
> 
> Actual and expected:  Get error message about trying to delete hidden content
To repro this, I needed to first fold "Heading Level 2 - folded". Reading comment 2, I see you had clarified this.
 
> I think there is one more variation (that I cannot always repeat) where I
> add a new heading, and the first time I get the error dialog, then I toggle
> the heading closed and open, and then it is deleted.
I'll look into why Test 1 and 2 don't show the dialog box. Same happens when the "Instructions:" heading is folded. I wonder if this has always been the behavior or if something has changed that has caused this.

Here is a patch that deletes folded content without any message:
https://gerrit.libreoffice.org/c/core/+/157667

I think this is probably the correct behavior when using the Navigator to delete headings.

Jim Raykowski committed a patch related to this issue.
It has been pushed to "master":

https://git.libreoffice.org/core/commit/ceceb574251d6ed3ce4da2fdcae398cb72488dfa

tdf#156980 SwNavigator: Make headings delete even if they have

It will be available in 24.2.0.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.

Marking this as fixed. Please let me know if more attention is needed.