Sometimes you click into text field, hubitat processes previous change (circle in top right corner appears for a second), and the you loose focus in the text field.
To see what I mean, go to RM, add an action "set dimmers and bulbs" -> "set dimmer levels per mode", and choose at least 3 modes.
Now start filling all "Level for ***" fields. Click into the text field, put value. Click into next text field, put value.. You'll see in second or third one, you can't input value because it lost focus, and you have to click into it again.
Especially bad if you use "backspace" key to navigate browser to previous page, try to delete the value, but because you are not in the text field, you go to previous page...