In OnBase 18 Web Client, when opening a document within the Legacy Viewer (ActiveX), it is possible to select the redaction button once and continue adding redactions one after another.
However, in OnBase Foundation Web Client it is necessary to re-select the redaction button each time a redaction is added.
This occurs due to a known issue (IND-3845).
To resolve this issue, upgrade to OnBase Foundation 25.1 or higher.
To work around this issue, use the OnBase Client (Thick Client).