The keystroke repetition can occur only if the OS language on both the host and remote PC (HTML5 resources) is not English (such as Chinese, Japanese).
Keystrokes Repetition may be noticed in the following scenario.
(As an example, consider the Chinese(Traditional, Taiwan) language.)
Scenario 1> When the language on Host and the remote PC is Chinese, and the input mode on Host and the remote PC is Chinese
Behavior - Keystrokes Repetition will occur.
Scenario 2>When the language on the host and remote PCs is Chinese and the input mode on the Remote PC is changed to English.
Behavior - Keystroke Repetition will occur.
Scenario 3>When the language on the host and remote PCs is Chinese and the input mode on the host PC is changed to English.
Behavior - Keystroke Repetition will occur.
Scenario 4>When the language on Host and the remote PC is Chinese, and the input mode on Host and the remote PC is English.
Behavior - Keystroke Repetition will not occur.