WD: script integer attribute values can't be set on Mac

1. Open WD.
2. Click the "Scripting mode" tool button -> Show scripting options.
3. Add a "Read sequence" element to the scene.
4. Edit a script for "Sequence count limit":

printToLog("test");
1

Expected: right after you accept the script editing dialog, you see in the Property Editor that script has been set.
Actual: script is not set.