https://mega.nz/file/OiAQWC4Z#nTnoVa0ewA6hmhJaUCujowEolF52QoN_4P7sdvvfuJU
It is impossible to work in your editor, no matter what elements I write it deletes everything.
SPAN, MARK for example.
Adding, through the system editor and then changing the text in the SPPB editor, the same thing happens.