Unity Issue Tracker - Crash on TextCore::OTL_GPOS_TableReader::GetLookupList when changing to a specific Font in the UI Builder

Fixed

Fixed in 6000.0.56f1, 6000.2.1f1, 6000.3.0a5

Votes

2

Found in

6000.0.51f1

6000.1.7f1

6000.2.0b6

6000.3.0a2

Issue ID

UUM-109409

Regression

Yes

Crash on TextCore::OTL_GPOS_TableReader::GetLookupList when changing to a specific Font in the UI Builder

Jun 13, 2025

How to reproduce:
1. Open the attached “CrashRepro“ project
2. Select the “Assets/UI Toolkit/MainUI.uxml“ file and open it (Right Click > Open)
3. In the UI Builder Hierarchy, select the “CornerMenu“ Element
4. In the Inspector, expand the “Text“ menu
5. Press the “Bullseye“ icon where the “Font“ field is and select the “Koruri-Bold“ font

Reproducible with: 2023.2.0a5, 6000.0.51f1, 6000.1.7f1, 6000.2.0b6
Not reproducible with: 2022.3.63f1, 2023.2.0a4

Reproducible on: macOS 15.5 Sequoia (Intel), Windows 11 (by user)
Not reproducible on: No other environment tested

First few lines of the stack trace:
0x00007FFE478AA146 (Unity) TextCore::OTL_GPOS_TableReader::GetLookupList
0x00007FFE478B1D72 (Unity) TextCore::OTL_TableReader::GetOpenTypeLayoutTables
0x00007FFE478B81A4 (Unity) TextCore::FontEngine::PopulateOpenTypeLayoutTables
0x00007FFE478B82BA (Unity) TextCore::FontEngine::PopulatePairAdjustmentRecordMarshallingArray

Resolution Note (fix version 6000.3.0a5):

Init ClassDef vectors to prevent out-of-bounds crashes
Resolution Note (fix version 6000.0.56f1):

Init ClassDef vectors to prevent out-of-bounds crashes

Comments (2)

tsujihaneta

Jul 06, 2025 17:23

I am also experiencing a crash with the Koruri font in unity 2023.2.13f1. I would appreciate it if you could fix this.

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