Strange box in the top left corner capturing text

[agose]

I am a Linux user and after having difficulties with Visual Studio Code's C++ addon from Microsoft, I decided to try out other IDEs. Code::Blocks is one of the choices I have, but I'm dealing with a very strange issue where most text seems to be captured in a small box in the top left corner.



I haven't been able to find any information about this and none of my developer friends have encountered this while using Code::Blocks. Does anyone know what this is, and how to disable it? Trying to program when I can't easily see what I'm typing is a deal-breaker for using Code::Blocks. It also seems to ignore the first space I press after that box appears (as you can see when I try to type endl)

The issue persists after reinstalling Code::Blocks and rebooting my system.

I am using Linux Mint 19.3 and Code::Blocks 16.01 (build 2017-09-30, 18:21:54 - wx3.0.3 (Linux, unicode) 64-bit)

Thanks

[oBFusCATed]

Update to the latest version (20.03) and probably the problem would go away.

[agose]

Unfortunately, updating Code::Blocks did not solve the problem -- the box still appears when I try to type.

My current version is now:

Version: 20.03-r11983
Build: Mar 20 2020, 23:40:00, wx3.0.4 - gcc 7.5.0 (Linux, unicode) - 64 bit

[oBFusCATed]

GTK2 or 3? (see the about screen for the info)?
What WM (Gnome, kde, something else) are you using?
Do you have some strange input method software?

Is this a package or self build codeblock you're running?