Hi Fabiano,
Based on your shared information, we have created the sample and validated the reported issue. But we cannot replicate the reported issue from our end. please find the screen shot and sample below.
Screenshot for same behavior compare with textbox component.
If still you have facing the issue, then please provide the below details.
1. If possible, please replicate the reported issue from our above attached sample and provide detailed image or video representation of issue replication steps.
2. If, possible, please forward the issue replicable sample to us.
3. Please share the Syncfusion package version details.
These details will help us to provide exact solution as earlier as possible.
Regards,
Sureshkumar P