In Plasma 6.1 beta, "Show Panel Configuration" is translated as "Configuración de mostrar el panel", which doesn't make any sense. It should be "Mostrar configuración del panel" of something similar.
There is also another translation error introduced in the same SVN revision (Rev. 1671643: https://websvn.kde.org/trunk/l10n-kf6/es/messages/plasma-workspace/plasmashell.po?r1=1671596&r2=1671643). "Hide Panel Configuration" is wrongly translated as "Configuración de ocultación del panel", when it should be "Ocultar configuración del panel". Both "Hide Panel Configuration" and "Show Panel Configuration" translations remain incorrect in the last SVN revision of plasmashell.po.
SVN commit 1689957 by ecuadra: Fixed wrong translation in Spanish CCMAIL: orionn333@proton.me M +6 -5 plasmashell.po WebSVN link: http://websvn.kde.org/?view=rev&revision=1689957
SVN commit 1689958 by ecuadra: Fixed wrong translation in Spanish CCMAIL: orionn333@proton.me M +5 -4 plasma-welcome/plasma-welcome.po M +5 -4 plasma-workspace/plasmashell.po WebSVN link: http://websvn.kde.org/?view=rev&revision=1689958