Using as an example of starting the April 30 version 4.1.7.0429 version AjaxControlToolkitSampleSite.zip shifting the focus on the textbox the page is not erased the mask, the result is visible in the attached figure.
Comments: I have the same issue as well. I have noticed strange behaviour 1. ClearMaskOnLastFocus does not work if switched to true 2. After pressing Tab key on keyboard the mask is not cleared but when using enter key it clears when autocomplete is enabled and InputDirection is righttoleft. 3. When field is not required mask stays on either is fill completely or partially. 4. Prompt character not accepting null. Does anyone have any workaround this?
Comments: I have the same issue as well. I have noticed strange behaviour 1. ClearMaskOnLastFocus does not work if switched to true 2. After pressing Tab key on keyboard the mask is not cleared but when using enter key it clears when autocomplete is enabled and InputDirection is righttoleft. 3. When field is not required mask stays on either is fill completely or partially. 4. Prompt character not accepting null. Does anyone have any workaround this?