Hello Jorge Cruz,
Thank you for your interest in NativeScript and for contacting us about this issue.
I can confirm that indeed at this very moment the described scenario is fully reproducible when using RadSideDrawer with FadeTransition and WebPack bundling with uglify. We have logged this one as a bug here
Our WebPack related developers are looking into this problem and you can track its development and possible workarounds/fixes in this issue
. Once a suitable solution is provided the information will be updated and if needed a new version of the plugin will be released.
Sorry for any inconvenience caused by this issue and once again thank you for reporting this case to us - I am adding to your account Telerik points as a bonus for the found bug