UGENE crashes in "Construct Molecule" dialog

Crash reports :
https://ugene.unipro.ru/ugenecrashes?id=5780,
https://ugene.unipro.ru/ugenecrashes?id=5768
Steps to reproduce:
1. Open "human_T1.fa"
2. Press "Find restriction sites" tool button
Expected state: "Find restriction sites" dialog appeared
3. Select enzyme "T(1, 105) -> TaaI"
4. Use context menu

Expected state: "Digest sequence into fragments" dialog appeared
5. Add "TaaI" to selected enzymes
6. Press "Ok"
7. Use context menu

Expected state: "Construct molecule" dialog appeared
8.Press "Add all" button
9.Press several times to checkbox "Iverted" for any fragment
Expected state: checkbox's state updates on every click
Current state: checkbox's state updates only one times, after several clicks UGENE crashes