Rajeaswar, given how strongly you feel about it, please consider creating a plugin. I use KeePass to open other KeePass databases and would have no use for a captcha.
Plugin version 1.3 and prior handled padding slightly differently, and this cause compatibility issues with KeePass iOS and Android. Version 1.4 now works with iOS and Android. However, any database save with Twofish 1.3 or earlier is not compatible with 1.4. Export database using 1.3 and then import using 1.4.
Happy to help. Scott
Issue fixed with plugin v1.4. See below link for latest version. @ Andrei, please confirm your issue is resolved with latest plugin release. http://gogogadgetscott.info/keepass/twofishcipher/
Issue reproduce. I will look into the fix. Scott