Libreoffice Impress in LibO 5.2 version hangs up when an impress file is modified and then saved

Description:
A problem caused this program to stop interacting with Windows.

Problem signature:
Problem Event Name: AppHangB1
Application Name: soffice.bin
Application Version: 5.2.1.2
Application Timestamp: 57beeed8
Hang Signature: eaea
Hang Type: 0
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033
Additional Hang Signature 1: eaeab1834931e9641ce0dd15614c9eb4
Additional Hang Signature 2: 9182
Additional Hang Signature 3: 9182e0430f488d8f8432a218d9af23b6
Additional Hang Signature 4: eaea
Additional Hang Signature 5: eaeab1834931e9641ce0dd15614c9eb4
Additional Hang Signature 6: 9182
Additional Hang Signature 7: 9182e0430f488d8f8432a218d9af23b6

I believe you’re wanting to report a bug. If so, please do that at bugs.documentfoundation.org
Your contribution will be much appreciated.

Same for me(Impress 5.2.2 on Windows 10). Perfectly reproductible: open a new Impress doc, enter any single character in it, save as ODP → Impress hangs. But this does not happen when saving to pptx.