This issue is known and it is not a bug in Rapise. For some controls DoSendText should be used instead of DoSetText, it is a bug in Angular itself.

The full solution is to replace 'DoSetText' with combination of 2 commands:
 

SeS('obj').DoLClick(); // This is needed to set focus
SeS('obj').DoSendText('ABC12341234124');

 

RVL Example