Created attachment 202675 [details]
Original .ODT document — created using LibreOffice 7.x

I encountered a layout regression when opening an ODT document created with an earlier version of LibreOffice (7.x) on Ubuntu 22.04.5 LTS. The document was originally created and saved using the default LibreOffice version shipped with Ubuntu (likely 7.3 or 7.5), and the formatting appeared correct.

However, when I opened the same document using LibreOffice 24.8 (installed via PPA on the same PC or on an other PC running Windows 11), the layout was significantly broken:

    Text boxes overflow with no line wrapping.

    General formatting appears disrupted compared to the original version.

I reproduced the issue both at home and at work using LibreOffice 24.8. Another user confirmed that the document opens correctly in LibreOffice 24.2.7.2, suggesting the regression was introduced between versions 24.2 and 24.8.

While I have a PDF version of the document that remains usable, this issue could affect many of my other ODT files. It's the first time I've encountered such incompatibility between LibreOffice versions using the native format.

Steps to Reproduce:

    Create or open an ODT document with text boxes using LibreOffice 7.x.

    Save the document.

    Open the same document in LibreOffice 24.8.

    Observe layout issues (text overflow, broken formatting).

Expected Result:

Document layout should remain consistent across LibreOffice versions, especially when using the native ODT format.

Actual Result:

Layout breaks in LibreOffice 24.8 — text boxes overflow and formatting is lost.

System Info:

    Original system: Ubuntu 22.04.5 LTS with LibreOffice 7.x

    Affected system: Ubuntu 22.04.5 LTS with LibreOffice 24.8 (via PPA)
                     Windows 11 with LibreOffice 24.8

    Confirmed working in: LibreOffice 24.2.7.2

Attachments:

I have included the following file to illustrate the issue:

    Original .ODT document — created using LibreOffice 7.x

I'll post soon 2 pdf showing the 2 layout.