The interface freezes, turns white, and doesn't allow any actions

I am working with KNIME 5.2.5, and every so often, without any apparent trigger, the platform screen goes white, and only the banner at the top with the name remains visible. It does not allow saving, closing, and never recovers. I have to close KNIME from the Task Manager, which means I lose the work I’ve been doing. I cannot use KNIME 5.3 because, in the workflow I’m working on, I’m using some Vernalis nodes for which there is no extension in that version.

Is there any solution for this? In one week, I’ve lost several hours of work due to this issue.

OS: Windows 11

Sceenshot:

Thank you