Exception occurs when double-clicking after adding FreeTextAnnotation

Detailed description of issue
After edting, export annotation and I get this xfdf string
xfdf_annotation.zip (838 Bytes)

An error occurs when importing. And importing all annotations fail…

Expected behaviour
I hope that the freetext annotation can be properly modified and exported.
I would like to see the modified contents when importing.

Error
CoreControls.js:789 Uncaught TypeError: Cannot read property ‘AU’ of undefined
at webpack_exports.e.Rv (VM451 CoreControls.js:789)
at webpack_exports.e.Rk (VM451 CoreControls.js:790)
at ba.Rk (VM451 CoreControls.js:217)
at ba.Rk (VM451 CoreControls.js:331)
at ba.DX (VM451 CoreControls.js:324)
at ba.Pd (VM451 CoreControls.js:323)
at n.f.Nk (VM451 CoreControls.js:293)
at VM451 CoreControls.js:242
at Array.forEach ()
at VM451 CoreControls.js:242