Issue #2958588 by cainaru, lauriii, DamienMcKenna, longwave, galactus86, bkosborne, pawandubey, clayfreeman, doublealpha, Blackstallion, tim.plunkett, justcaldwell, kpaxman, mark_fullmer: Off-canvas style resets are overriding styles (especially SVGs) resulting in display issues

Issue #3111409 by mherchel, proeung, larowlan, alexpott, lauriii, Gábor Hojtsy, andrewmacpherson, catch, xjm, andypost, rahulrasgon, rabbitlair, mrconnerton, poojakural, boulaffasae, jerseycheese, shimpy, Indrajith KB, DuneBL, kiran.kadam911, komalkolekar, keboca, hawkeye.twolf, andrewozone, Maithri Shetty, alexdmccabe, sd9121, Sreenivas Bttv, katannshaw, mgifford, nod_, webchick, mtift, rainbreaw, Berdir, brianperry, thejimbirch, Dom., q0rban, nitesh624, hansa11, himanshu_sindhwani, kostyashupenko, shaktik, bnjmnm, sharma.amitt16, sonam.chaturvedi, steinmb, shaal, ressa, Ramya Balasubramanian, Sebacic, pradeepjha, tanmaykadam, thedrupalkid, vinitk, volkswagenchick, viappidu, vebrovski, Ujval Shah, Webbeh, Yuri, trebormc, msuthars, mrinalini9, bash247, chetanbharambe, ellenoise, anevins, andriyun, CocoM, JayKandari, ambuj_gupta, hussainweb, jhodgdon, Pooja Ganjage, ju.vanderw, jwitkowski79, MaxPah, Lokender Singh2, jponch, KarenS, KarinG, Lal_: Add new Olivero frontend theme to Drupal 9.1 core as beta; later make it stable and the default

Issue #3079738 by lauriii, saschaeggi, webchick, xjm, andrewmacpherson, shimpy, effulgentsia, Wim Leers, DyanneNova, svettes, rainbreaw, fhaeberle, ckrina, AaronMcHale, justafish, catch, charlieweb82, AntoineH, lot007, pzajacz, kostyashupenko, jasonbarrie, antonellasevero, finnsky, worldlinemine, bnjmnm, RobLoach, Dennis Cohn, huzooka, Archita Arora, joachim, jrockowitz, benjifisher, shaal, Gábor Hojtsy, quiron, L2G2, ccasals, hampercm, if-jds, abhisekmazumdar, Kami Amiga, pivica, zrpnr, BrightBold, imalabya, jhedstrom, Neslee Canil Pinto, maliknaik, junaidmasoodi, Maithri Shetty, pranav73, mandclu, modulist, nod_, philosurfer, phenaproxima, mherchel, mlncn, rafuel92, leymannx, kiboman, Swapnil_Kotwal, anevins, evankay, rfmarcelino, thamas, brianperry, idebr, joelpittet, boulaffasae, alexpott, volkerk, DuneBL, Eli-T, Mahenkvyas22: Add Claro administration theme to core