Issue with NWBC 5.0 after updating SAP GUI 7.40 to PL5
I'm facing a problem with NWBC 5.40 + SAP GUI 7.40 after updating SAP GUI to pach level 5. A problem occurs only on relatively old systems (NetWeaver 7.0 for example) and is as follows: after displaying trees (ALV Trees I guess) a tab is freezing and starts to constantly update - circle icon on tab header is blinking and I cannot push any button on toolbar or screen within this tab, I cannot also close this tab. New tab however opens without error until some trees have been displayed within it - and this tab is also freezing. To simulate an issue I simply run transaction SE84 directly after logon to the system, and tab freezes instantlyafter displaying a repository tree and it stops to responding.
SAP Logon itself works without the aforementioned problems.
How can I fix this issue?