Creator crashes in fulltextsearch::qt::QHelpSearchIndexReaderDefault upon searching for help entry

Steps to reproduce: Open Creator, Press Help, Select Search in the Combo Box, enter "freeze" into the text field and press the Search Button.

Creator crashes instantly and always.

Stack Trace:

Process: Qt Creator [1236]
Path: /Users/USER/*/Qt Creator.app/Contents/MacOS/Qt Creator
Identifier: Qt Creator
Version: 4.5 (4.5.1)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Qt Creator [1236]
User ID: 501

Date/Time: 2018-02-24 23:13:29.748 +0100
OS Version: Mac OS X 10.13.3 (17D102)
Report Version: 12
Anonymous UUID: 7DF61346-B6F8-908A-0655-2004B20977DE

Sleep/Wake UUID: 0C8EC8FF-56D1-43A8-989E-69CECB514C9A

Time Awake Since Boot: 13000 seconds
Time Since Wake: 10000 seconds

System Integrity Protection: enabled

Crashed Thread: 11 fulltextsearch::qt::QHelpSearchIndexReaderDefault

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00007fe886574b18
Exception Note: EXC_CORPSE_NOTIFY

Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]

VM Regions Near 0x7fe886574b18:
MALLOC_SMALL 00007fe79e000000-00007fe7a1800000 [ 56.0M] rw-/rwx SM=PRV
-->
STACK GUARD 00007ffede643000-00007ffee1e43000 [ 56.0M] ---/rwx SM=NUL stack guard for thread 0

(... skipping other threads)

Thread 11 Crashed:: fulltextsearch::qt::QHelpSearchIndexReaderDefault
0 org.qt-project.QtCore 0x000000010e53f45d QVariant::QVariant(QVariant const&) + 13
1 libqsqlite.dylib 0x00000001176fdecf 0x1176f4000 + 40655
2 libqsqlite.dylib 0x00000001176f8bc8 0x1176f4000 + 19400
3 org.qt-project.QtSql 0x00000001132f5694 QSqlQuery::exec() + 308
4 org.qt-project.QtHelp 0x00000001132c4dc7 0x113290000 + 216519
5 org.qt-project.QtHelp 0x00000001132c5284 0x113290000 + 217732
6 org.qt-project.QtHelp 0x00000001132c5b6c 0x113290000 + 220012
7 org.qt-project.QtCore 0x000000010e33f875 0x10e312000 + 186485
8 libsystem_pthread.dylib 0x00007fff612726c1 _pthread_body + 340
9 libsystem_pthread.dylib 0x00007fff6127256d _pthread_start + 377
10 libsystem_pthread.dylib 0x00007fff61271c5d thread_start + 13