Bug 134817

Created attachment 163039 [details]
Example file from Calc with header text and two different fonts

Attached file contains a simple spreadsheet header that uses different fonts: left part has two paragraphs with different fonts set (Arial and TNR) while the right header part contains one paragraph with the same two fonts set.
Upon saving to XLSX format the right part loses the first half of the text that had different font than the end.
Opening a similarly formatted XLSX from Excel works fine, but saving shows the same problem.

Steps to reproduce:
    1. In Calc go to Insert – Headers and Footers
    2. Type some text into one of the Left/Center/Right fields, without pressing Enter to separate its parts
    3. Set different fonts to the text with the Text Attributes button
    4. Save the file as XLSX and reopen

Actual results:
Only the last part of the text is visible, first part that had different font is lost.

Expected results:
All text retained.

LibreOffice details:
Version: 7.1.0.0.alpha0+ (x64)
Build ID: f7eff4319be741143f6d8d5e0f2995e3ce46b126
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: Skia/Raster; VCL: win
Locale: en-US (hu_HU); UI: en-US
Calc: CL

Also happens with:
Verzió: 6.0.0.3
Build az.: 64a0f66915f38c6217de274f0aa8e15618924765
CPU szálak: 4; OS: Windows 6.3; Felületmegjelenítés: alapértelmezett; 
Területi beállítások: hu-HU (hu_HU); Calc: CL

Version: 5.0.0.5
Build ID: 1b1a90865e348b492231e1c451437d7a15bb262b
Locale: hu-HU (hu_HU)

Verzió: 4.2.0.4
Build az.: 05dceb5d363845f2cf968344d7adab8dcfb2ba71

But not in:
Verzió: 4.1.0.4
Build az.: 89ea49ddacd9aa532507cbf852f2bb22b1ace28

Verzió: 4.0.0.3 (Build az.: 7545bee9c2a0782548772a21bc84a9dcc583b89)