holding shift + r/lmb will cause the game keep holding shift (only if you stop holding shift after releasing the r/lmb. probably a browser issue), can be easily "fixed" by pressing shift again
Thanks for reporting these. We're aware of the motd issue and have identified the cause. The shift+* thing really is a browser issue (shift is generally a way browsers provide to enable users to trigger default browser actions, i.e. to circumvent custom, possibly malicious, event handlers installed by websites), no idea what to do about it.