We offer a number of built-in themes with Bootstrap v3 and Bootstrap v4 themes specifically designed to replicate the look and feel of Bootstrap. The other LESS themes apply different dimensions to the widgets so they need to use a different base file (kendo.common.css) and not kendo.common-bootstrap.min.css.
There are differences in the layout used by Kendo UI and that of Bootstrap, which requires additional CSS to be applied, see the following documentation sections for more details:
As for the Material theme, do you use the LESS or SASS Material theme (the latter follows the Material Design Guidelines
)? Could you link a dojo example, which demonstrates the scenario in which the Material theme breaks Bootstrap? This will give us a better idea of the issue you are facing and we will try to come up with a workaround.
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