ComboBox items corrupted in TTMSFMXGRID

imagine we have a TTMSFMXGrid with a column of combobox and a column of checkbox. If I select the combobox and the drowdown opens, I click on the checkbox, then the dropdown closes and if I reopen the dropdown, the list is corrupted with characters I can not identify. It is reproducable!
I use the latest version of TMS FMX pack with Delphi Tokyo.

Can you please provide us with some sample code that reproduces this issue?

how can I send you files?

Please send them to with a link to this forum post

its on the way. I need a quick fix if possible. Having customer issues and claims!