Hello everyone, I 'm using RouterOS 5.11 with a RouterBoard450G. The problem is that suddenly the winbox's interface seems broken. All buttons get disabled on Routing->OSPF/BGP menu, such as plus sign, less sign and so on, as you can see on the 2 images attacheds.

Does anyone here can help me?

are you running winbox in MAC mode?
reboot the router and test it again.
using in secure session mode and normal mode and compare them
uncheck the Load Previous session and run winbox.

cybercoder,
I'm not running in MAC mode and when I reboot the device this strange behaviour stop, so that I can use the winbox normally.

using in secure session mode and normal mode and compare them

I don't understand how this can help with my problem

uncheck the Load Previous session and run winbox.

As I rebooted the device, I have to wait to get this problem again and see if this could help.

I don't understand how this can help with my problem

I saw this before, because of very low bandwidth on encryption mode (with some carrier in some countries because of some fuc... gov... policies ), appear of winbox buttons and lists is not correct.